Direct Numbers for All:

1-888-288-4202     AT&T activation centre, these guys are basically the ones that determine you're activation status.  They are the final (3rd level of the credit check)    P.S.  if you tell them your a customer, say you have already "purchased" an AT&T phone otherwise they will not talk to you or check your activation / credit status. 
 
1-888-784-4275      AT&T the number that the direct dealer calls, I haven't really figured what you can do with this number... but I did get an opportunity to yell & curse! :)
 
More to come...