Billing & Technical Issues? No Problem! AT&T Manager Here to Rescue You!
This is something that will need to be investigated by technical support through AT&T first. Please call them from a phone that is not your cell phone at 800-331-0500.
There could be a number of issues that cause this, including if you recently ported your number from another carrier, a network outage from AT&T or Verizon, profile restriction that was accidentally placed on your account, etc.
3 Private Answers