They tell you that AT&T has chnaged the line charges to them in a sneaky way and try to verify your billing information, but when you ask them to be more specific, they tell you it is an "optional" switch. Don't give them any information. Just tell them you are not interested.
They've called 3 times today. Never left a message once. If I call back it goes right to a VM. I will make sure to answer next time I see the number and let them know they a re to NEVER call me again.
They hang up if they dont get who their asking for or if you ask them to leave a message