Their customer service is THE WORST ON THE PLANET!
I tried cancelling my services in September. They said everything was cancelled and gave me confirmation numbers. In October I got a bill. I called, they said it was all cancelled and to ignore the bill. I called in November after I got another bill. They said nothing was cancelled, and they'd take care of it. I got ANOTHER BILL in December, and NOTHING HAD BEEN CANCELLED YET! Collections was chasing me down for money that I "owed" for services that I didn't use! Each and every one of these phone calls lasted about 45 minutes, most of the time on hold, all on my cell phone during peak hours. YIKES! I hate AT&T, they are of the devil, and I would NEVER recommend them to anyone, or ever return as a customer.
BTW, the final phone call was in December. I actually got someone in customer service who was new and didn't give me the scripted run around. She took care of it. Finally.