Who called from 8644788991

called and left a message about a "special offer" saying to press 1 to take advantage and to press 2 to be removed from the calling list....

I picked up and the recorded voice said a friend had referred me for a free wireless device and I hung up.  Seems like it's spam.

Answered the call .... heard nothing on the other end as they called a business line.

they called but left no message