AT&T DSL Customer Service

This number was a bit hard to find:
“You can call AT&T DSL Customer Care at 1-877-937-5288 (1-877-XDSLATT), and select the billing prompt.” from the AT&T DSL faq.

update March 28th, 2008
I also just found out that “CA customers can call 858 522 8838 (not tollfree)” at fatwallet. This number was really quick, and went direct to the customer service rep without any menus.

update April 2nd, 2008
If you want dry loop service (DSL without a phone line) you can call the AT&T dry loop department directly at 1-800-942-6037.