Originally Posted by
AugustusM
I haven't changed the United customer service number on my phones since I put in the original contact years ago, I think it redirects you based on your status when the system detects what number you're calling from.
That is my experience as well. But in the OP’s case, he’s calling from overseas using ATT, so it may not recognize that number. Then you usually get an opportunity to say your MP number to get the proper priority.