Respected sir/madam,
AT &T is big company, I had used the service for 10 years, the service is fine, but its really a mess management for billing and customer support.
I had deposited to AT&T $70 for local phone when I moved to U.S, after several years later. When I try to get back my money, I called several time and supplied my paid record, but, no result, every time someone said will help, but never had a solution, then I gave up.
When I want to change DSL internet, its really bad experience. its difficult to talk with an agent, you waste many time to talk with machine first, and then non experienced agent or support person waste and not responsible. Also, someone transfer you to an invalid number.
Finally I wasted over 2 hours and had 4 days without internet life.