The BellSouth customer service number is 1(872)‑666‑1966, which connects you directly to support for login issues, password resets, account recovery, and email troubleshooting. Since Bellsouth.net is now managed by AT&T, you can also reach help through AT&T’s main support line 1(855)‑666‑7787, where representatives assist with account verification, server settings, and security problems.