Same as Steviemix ... 7AM EST they called, a loud "beep" on the line, then "You will be removed from our call list immediately. I assume they're fishing for valid phone numbers.
This number called our house at 1:32 AM Eastern time, waking up the whole family. We let our answering machine pick up, and a recorded voice left the message "Your request to be removed from our call list will be fulfilled immediately." We'll see if that happens...