BellSouth was a telecommunications company that operated in the United States' southeastern region. BellSouth most likely provided the bellsouth.net email address prior to the merger with AT&T. If you are experiencing issues with your Bellsouth.net email account. If you want to reach a live expert from Bellsouth (or its successor AT&T, as AT&T acquired Bellsouth), here are some general steps you can follow: Dial the customer service number +1-877-422-4489 online chat, and website, these experts are available 24*7 at the help desk to attend to your query.