Warzone phone number locking me out of game

I get the error: blzbntbgs00004666 when I try and open Warzone through the launcher.
When I look at my Blizzard and Activision accounts on their respective websites, the phone numbers ARE THE SAME. Any help? I’ve reached out to Blizzard multiple times and they don’t respond. Any help? Anyone go through something similar and figure out the problem?