We have Comcast and have had numerous billing problems. I don't know if anyone else has had this problem, but, they turned us in to a collection agency because they said we did not return their equipment when we moved from one house to another within TV. When in fact, we returned the box in June and I had a receipt to prove it. (We were not moving to the new house until August and headed north, hence the reason to return equipment for the two month span.) The collection agency was calling us on a DAILY basis...SEVERAL times a day. We were being charged $400 for the equipment. I tried on numerous occasions to make the collection agency understand that we did not owe the money, but they don't want to listen. I also tried numerous times to talk to someone at Comcast by calling the numbers they say to call. Soooooo frustrating! They would put me on hold for an hour, or, I would finally be able to talk to someone and then the call would drop.
Finally, I was able to speak to a very nice young lady in the Oxford office. She went over our bills with me and determined just as I did, we owed nothing! She then provided me with copies from the computer screen indicating a "0" balance. The next time the collection agency called I was also surprised to talk to another very nice lady. I explained my situation and told her I had copies from the Comcast office to prove I did not owe any money. She provided me with a fax number, which she told me she wasn't supposed to do, but she was interested in helping me. I wrote them a letter and faxed it along with the copies of the computer screens. Well, I never got another phone call from them.
I did receive a letter stating that our credit was not damaged by the above, but never an apology from Comcast for the mix-up.
Be sure to get a receipt when you return your equipment and hang on to it!