A warning to watch your mail so this doesn't happen to you....
"You don't need to do a thing. You'll automatically be moved to a lower-priced plan. We primarily use remote electronic tests to measure speed at a customer's modem. We can fix the problem for many customers by resetting their modems. But resetting the modem isn't a solution for all customers. For these customers, the issue could be caused by the wiring inside their home or business, the modem itself, or something on the AT&T network."
»www.att.com/esupport/dsl ··· d=149987
Had a defective modem causing poor speeds and at&t decided to lower the speed tier without authorization. Was unable to get the speed tier back through dsl support, claimed it's not available, and was informed that I would need to speak to sales. Fortunately for this site and the at&t direct forums, everything is back to how it should be!