can't access my att email. DSL

i cant access my att email that i used when I had DSL. okay so ive recently ungrades from DSL to Uverse internet a few days ago and on the day I installed the internet I was given the option to use the same @email i had for dsl or get a new one. I went for the new email, but the thing is that every time i had forgotten my password on the email i had with dsl, I would just enter some info that was on my dsl router and go to the 2wire gateway website page where I could reset my password. now i cant do that. I can't even receve a temporary password because i accidently entered a non-existing email address, and I can't remember the security questions because it has been over 7 years since I added those questions. Help please?