What email address am I to use to send an email to an AT&T customer service rep?

I'm having serious problems with my new service and cant reach them.Can someone tell me how to send them an email

What email address am I to use to send an email to an AT%26amp;T customer service rep?
You can contact them by phone


AT%26amp;T (Ohio) service 1-800-660-1000


AT%26amp;T DSL Internet Services 1-877-722-3755