quantumfiber.com Reviews 1,041

I have had Quantum Fiber as my internet service provider for ten months. On February 4th, 2026 I was notified by them that they canceled my Internet service and closed my account without warning or any input from me. My payments were on time and I had two weeks remaining for internet use I had already paid for. I spoke to three customer service representatives who gave me different answers but the last one I spoke to said the account had been closed because it had been marked as an account for a residential unit into which no one ever moved or used internet service. I have lived here and used Quantum here for ten months. I was advised to open a new account, which I did, but I still do not have internet access through wifi.

I left Quantum years ago for slow speed internet. My neighbor just switched from Comcast to Quantum. Quantum came out to install his fiber drop. They did not call 811 to locate utilities on my property even though they had to access their pedestal on my property. The fiber drop contractor cut my fiber drop interrupting my internet service for 1/2 a day. The drop contractor went went trough the middle of my front yard not in the easement then under my paver block drive heaving the pavers. They tore up my grass on both sides of the drive and just stomped it back in place. When I arrived home the contractor was beating on the pavers with a hammer. When I asked for a contact name and phone number I was told he did not have one and just to call Quantum. I spent over 3 hours on different call trees as I was passed from Quantum to Century Link to Lumen Technologies. Finally a repair rep gave me a ticket number and said that a representative would be out between 1 to 5 today. No one showed. When I called back the repair group told me to call Lumen and file a property request. I called Lumen and got another contract employee who just took my information yet again. Said they would call tomorrow. After reading the reviews, it looks like nothing will happen unless I contact the Public Service Commission or an attorney.

Made initial appointment for installation and on anticipated date of installation they cancelled and rescheduled. On rescheduled date of installation after waiting over 6 hours for someone to show up…no show. Called their “Success Team”, found out that they had again rescheduled for two weeks later…cancelled order. Horrible service! Advise to stay away!

When I signed up for service, I was told there were no issues, and we could get service. They quickly took my money, and we scheduled installation for approximately 9 days later. The day before, I was told that there would be a delay for the installation. At 8 am the next morning, I got a message saying that we were back on for 11-2. At 1:45 I get the new message saying they are going to be late and to reschedule.
I get back to the office, and an hour later, I receive an email stating that they were incorrect and cannot service the building. WTH? Then why even pretend to send someone out and make me waste 3 hours. I should have listened to the reviews.

I had an appt for installation on a Saturday, with no notice they sent a text changing it to the following Tuesday. After 50 minutes on the phone the technician said she would book me for the 4th. That didn't happen. Finally got it changed to the 4th at 0800. Been waiting all day. Called to check if they were coming
Nope, not today. Terrible customer service!

I have service with that company quantum fiber for one month and half, I call to report issues with the service and no body help me with the issue. I have to wait two days for someone give me a new service to my house. They give me tecnitial for the first day and the same day they just tell me the technician don’t come to my house, he just cancel and nobody tells me anything. I have to call to check what happened. Now I have to wait until tomorrow to check if they coming.

I called Quantum Fiber yesterday to ask a few questions. When I didn't sign up immediately, I was transferred to 'Chris', apparently their high pressure sales manager. He was insulting, condescending and rude - telling me that I "didn't understand what a promotion meant" and that it wasn't going to be available again if I called back. I hung up.
His behavior is the reason I didn't sign up. Good job dumbo!

We have been without internet service for two full days. This is not a casual inconvenience. This is a business disrupting outage.

I followed every troubleshooting step Quantum Fiber provides. Power cycling. Resetting equipment. Verifying connections. Waiting required intervals. Nothing worked. The issue is clearly on their side.

Online chat was a dead end. The representatives struggled to communicate clearly and provided no meaningful assistance. The experience felt scripted, disconnected, and ineffective.

I then called support twice. Both times the call was answered and then disconnected. No explanation. No callback. Just silence.

Out of desperation, I called sales. Sales answered immediately. That tells you everything you need to know. I explained the situation and was transferred. I was then transferred three more times. On the fourth transfer, I was placed on hold indefinitely. I am still waiting. The 4th time was another person that was barely audible and they hung up. Calling again.

Quantum Fiber is very efficient at signing you up and taking your money. Once there is a real problem, you are completely on your own. No ownership. No accountability. No urgency.

This is unacceptable for any modern internet provider, especially one marketing itself as a premium fiber solution. Reliable connectivity requires reliable support. Right now, Quantum Fiber delivers neither.

I am posting this review because standard support channels have failed entirely. I expect immediate contact from someone empowered to resolve this issue, restore service, and explain why basic customer support broke down so badly.

If I could provide a lower rating, I would. My building only uses Quantum. But, through a series of errors with Customer Service, I cannot get service. It has been 17 days that I have been without internet, phone, the ability to communicate, television, etc. No one can seem to resolve the issues. Customer Service Technicians have NO empowerment. They are nice, but useless. They cannot resolve issues, set up service for you, etc. They can do nothing. If you treasure your sanity, stay as far away from Quantum as you can!

I am submitting this review and formal complaint after more than six weeks of unresolved issues, failed appointments, and complete lack of accountability from Quantum Fiber.

I paid for internet service over a month ago, and as of today, I still do not have service installed. Multiple technicians have arrived at my home on different occasions only to state that they were unable to complete the installation. No clear explanation has ever been provided, and no effective solution has followed.

Even more concerning is your company’s scheduling process. On several occasions, I received automated messages stating “Your appointment has been scheduled” for dates I never agreed to and was never consulted about. Quantum Fiber appears to schedule appointments without customer consent and without confirming availability.

In addition, I have personally scheduled appointments where no technician showed up at all.

One incident highlights how dysfunctional this operation is: I had an installation window between 2:00 PM and 6:00 PM. I was going to arrive home at 2:05 PM, so I called customer service to request that the technician be notified that I was five minutes away. I was told there was “no way to contact the technician.”
A company that sends field technicians with no communication channel is not operating in a competent or professional manner.

I would also like to add the personal impact this has had on my family. I ordered Quantum Fiber on Christmas Day because we had just purchased tablets for our children as Christmas gifts. We told them not to worry, that the internet would be installed within a few days and they would be able to use them. They were extremely excited.
Those tablets are still sitting in the same box, in the same place, since Christmas, because they are essentially unusable without internet service. Six weeks later, I am still explaining delays to my children because of your company’s failure to deliver what was paid for.

At this point, I have:
• Paid for a service that has not been delivered
• Rearranged my schedule for multiple failed appointments
• Had appointments scheduled without my authorization
• Been given excuses instead of solutions
• Been told customer service cannot even reach their own technicians

This is, without exaggeration, the worst customer service experience I have had with any company in my life.

This is the absolute worst internet service I have ever had! From day 1, when they installed 2 HUGE ugly eye sores ( modem/router/pods or whatever)fairly high up on the wall in a very obvious place, I’ve been annoyed. I moved from a place that had att fiber with the same speeds as the quantum is in my new home. I have maybe 1/4 of the devices connected with quantum as I did with att and it’s always cutting out, lagging, being so slow, and now I have no internet at all and no one is responding to my chats or inquiries! The app is horrible too and doesn’t provide enough info on usage or connected devices. How is this company still in operation?!?! I will 100% be switching to xfinity since I can almost guarantee that even listed as “slower” it will be faster and I 100% know it will be much more reliable and has an app where more is available to see and do. Ugh.

Worst company I've ever dealt with. Had them roughly a year ago and was left without internet for over two weeks while dealing with incompetent customer service people the entire time. Canceled my service, demanded a refund which luckily I got. Since then this company still harasses me by knocking my door after I tell them to leave me alone. Absolute scam artists who care more about money then integrity.

I do not consent to people solicitation at my door when I CLEARLY say NOT to. And yet, a stranger comes to my porch that has a no trespassing sign, then to the door with a No solicitation sign, and ignores them all to leave me a flier. I will be filing complaints when and where ever possible.

House was renovated and the Inet line was cut.

In my 1st calls to QF, they said they could not repair it because I was on pause, and they could not take me off of pause; I had to do it over their internet -- which of course was not possible since their line was cut. They also said they could not update my phone for the same reason.

After a day of calls, I reached someone who could make these changes and schedule a repair for the next day. The repair person came out and said they could not fix a 2nd floor connection unless I provided a ladder, but that if I rented a ladder, they would be back the next day (Saturday). They did not return Saturday, and their phone line said the order was written but not entered. He promised Monday. Same story Monday, and they promised Tuesday, but they sent me an email with a schedule for that Friday. I told them that if they could not fix it by Tuesday AM, I was switching providers. I called Tuesday and canceled. They gave me an argument, but finally said I could cancel as of the end of the month -- no refund. I fought them back to a partial month but got no credit for the time they could not make it work.

This WiFi company FKNG SUCKS!!!! Don’t waste your money for spotty service. Pay the extra money for quality bc this isn’t it! To the owner you’re a scam artist.

The actual service is decent, if you can ever get it set up. Their service management and new customer procedures are absolutely horrible.
- Online to setup
- Pay and schedule tech
- Tech scheduled a week later
- Tech comes and says fiber needs to be run to the home from the terminal
- No update for a week
- I call, they have no info because it's 3rd party contractors, but put a note in the system
- No update for another week
- Call again, expedite and put a note in the system, finally a person that calls the service dept to get an update
- Another week, they finally come and run it. No advance notice, so luckily the person calls me to find out some details on where to run it, etc.
- Another week for the tech to come after the install (to be fair, I travelled so was unavailable sooner)
- Tech comes yesterday, does the install. moves my current Internet wires around and breaks stuff on my network and spectrum Internet, which I had to get because Quantum's service management is absolute trash. But I did get it working (Quantum).
- Today the Internet is down. They cancelled my service and account because of a "Migration problem". No further details provided, no apologies or compensation for my time and wasted productivity. Absolutely nothing.
- I called and am told I need to "start all over again and sign up with a new account".
- Check for appointments for a new installation, and there's nothing sooner than 2 weeks. The modem is sitting right here with a green fiber light, waiting to connect, and I have to wait 2 weeks for a tech to come do what can probably be done over the phone. Spectrum was a self-installation process and it came right up. Their procedures are a joke.
This is the 2nd time in 2 years I signed up for Quantum, and both times, it took no less than 6 weeks to get my service settled. The service is fine once up, but definitely look for an alternative, or just choose another provider if available because Quantum can't get their act together. It's truly amazing that their service management and new customer process is this piss poor. It really puts a disgusting stain on a service that runs well once installed. It's like they don't want the money.
If you depend on Internet for your livelihood (I work from home), have a backup plan or choose an alternative if you're considering them.

I experienced a lot of Drop outs... I was not in the best teir but when it was time to fix it YOU have to be the Tech running around pressing this and that.. then finally I had enough I cancelled service to then have to return equipment via UPS Lable They provide... then they Received it apparently but then still Charged me 650.00 for Unreturned equipment... even though the Lable had my name address etc.. I could have sent a Brick I guess

I don't think Quantum has had their fiber for the day, loose stools and a dirty toilet bowl. Charged me for returned equipment & you can't set up a guest network. Waste of time for me, both trying to figure out how to set up a guest network—I was told you could and even sent instructions from a support tech on how to do it, but then figured out it's not possible. Returned all my equipment on-time and they charged me for a bogus missing pod. After a while on the phone I was able to get a refund, but complete waste of time. Thanks for nothing, Quantum! Eat some broccoli.

They go door to door at 7:30-8:00 at night!!!!! The most unprofessional thing strategy EVER!!! Nobody want to have their door knocked on at night. It is not safe for anyone.