NextAlarm Refused to provide refund (as per their contract) or return calls after cancellation of service Internet

Short version: After canceling a long-term-prepaid account for NextAlarm monitoring service, I am due several hundred dollars of pro-rated service. NextAlarm refuses to provide a refund, or even acknowledge my requests for one.

Complete version:

I signed up with NextAlarm for monitoring of a home security hardware package. I prepaid for several years of service with NextAlarm, noting their cancellation policy (http://info.nextalarm.com/help/nextalarm-cancel):

"You are free to cancel service at any time, regardless of your billing plan. To cancel, please log into your account, click Open a Customer Service Ticket, and let us know that you would like to cancel, and the specific date you would like service to end. Refunds: If you prepaid for one or more years, you will receive a refund pro-rated at the $17.95 monthly rate. In other words, if you pay for one year, then cancel before the year is over, you are refunded as if you had been paying the $17.95 rate."

Over time, I grew dissatisfied with the level of service provided by NextAlarm for several reasons:

* Their monitoring service wasn't able to maintain contact with the hardware for my security package. Checking the status of my security system through their website produced a status that was months old ("last activated: April, 2013" or something), even though other parts of the service indicated that my system was currently in contact with theirs.

* The software interface for accessing live cameras ("NextView") was a neat idea, but terribly implemented. I bought a few (extremely overpriced) cameras that came preconfigured to talk to their service, and paid extra for live access to my camera feeds; yet, the live camera service was never able to receive current images from the cameras consistently.

* The company deprecated the security package that I was using (Abbra2) and exclusively began offering a new package (Abbra-R) that wasn't backwards-compatible. While I could continue having my hardware monitored by NextAlarm, new components for my system only became available through third-party vendors.

* The NextAlarm website fell into disrepair. Some forms on the website allowed remote configuration of my security system, and that was working fine when I signed up; but a year or two later, the forms stopped working. When I submitted a support request through NextAlarm, I was told that the online forms were dead, and the only way to configure my system remotely was (get this!) to *call a technical support person and tell them what I wanted updated, and that person would manually update a database*.

* The NextAlarm monitoring service ineptly handled alarms by calling wrong or outdated numbers, and failing to call a secondary number listed on our account.

Given all of those problems, I opted to cancel my service. I followed their process - had to do so a few times, just to receive a response - and was told that my service was canceled.

However, NextAlarm has refused to issue any refund for pro-rated service, as per the contract. I included a demand for a pro-rated refundwith my cancellation requests, which NextAlarm didn't even acknowledge. I submitted *several* support tickets asking for a refund - all were closed without comment, and eventually my user account was deleted so that I can't submit any more. I have called customer service to ask for a refund, and have not gotten anywhere.

I believe that NextAlarm owes me several hundred dollars for a pro-rated refund, and I believe that they have no intention of repaying any of it, or even acknowledging my attempts to contact them.