Lost access to sbcglobal.net email -- redirects to att.net account
I have two email addresses -- an att.net account which I never use and an sbcglobal.net account which is my primary account. Two days ago when accessing sbcglobal email through mail.yahoo.com it asked me to log in again (as it does from time to time -- no big deal) but this time it redirected me to the att.net inbox. I can see both accounts at the top in the pulldown menu with my name on it but when I try to select the sbcglobal.net account it pops me into the att.net inbox which is basically empty. I've had this account for 10+ years with no problem. I can still access my email on my phone (for now) but no longer can access through any browser on my desktop or laptop. I cleared all cache and also tried logging in from incognito mode. Still does the same thing!