Retrieving SBCGlobal.net password when phone number has changed

Having read all the fixes on this forum, none seem to work. I have changed the phone number associated with this account, so sending out a password doesn’t work, even though it’s now saying “

Hmm… we can’t reset your password We don’t have the account details needed to complete your request.

Also saying, you’re almost out of attempts to login etc. All other routes have failed. It seems there is no way to retrieve access when you have an old email that had minimal backups entered in except a phone number. 

Please HELP.