Service

Use AT&T having problem, call AT&T they said they showed I was using WiMAX telecommunications, do not know who or what WiMAX is, some one hack my phone and accounts changed passwords.  My AT&T  data plan some times tells me to turn off my data plan or to connect to wifi,
Found my calls forward to 214-539-2359 no idea who's number it is or why my calls forward.  Any help would be greatly appreciated with is problem
Thank you
Marilyn S Wells Hill