Same here...if it is someone checking to see if someone is home or not, I feel bad for the person that tries to come into this house with my pit bull here.
I've received a call from this number 5 times this week. Finally I got someone to talk when I answered the phone. It was a chimney company. Told the guy I was sick of the calls and my chimney was fine. Take my number off your calling list. He said O.K. I'll see you tomorrow, and hung up the phone. I am also on the do not call list.