If you log on to your myatt page, there is usualy a link you can click that says, Chat. That connects you to an online rep, who can usualy handle minor details like setting up auto pay, and so on. AND, they can also transfer you to other online reps who CAN help you, if what you need specificaly is not in their skill set.
I am trying to set up payment arrangements. But it keep saying that I can't until June 23, 2019 , or. A day before, but when I try it won't allow me. I need to make payment arrangements for July 12,2019