This number called us once each on two consecutive days. Caller ID says "Delivery Notice." I called the number to find out who it was & what was "delivered." The number answers, does not identify who it is, and gives a recorded message:

"Thank you for calling customer service. If you would like your number removed from our call list, please enter your telephone, area code first, on your touch tone phone. You are required to confirm your phone number. If you do not confirm your phone number, we will not be able to remove your number from our call list."

Probably prank, but I did not want to enter anything.