They call & when machine picks up they hang up. I called the number back & got a message "please state your name & Google voice will try to connect you." I didn't leave my name.
Received call on Jan. 13, 2015 @1:45pm. Could hear a woman asking a man if he installed something in the room, he answered with a yes. The line stayed open as if she didn't know we were connected. I hung up and googled their number. Looks like I'm not the only one they're calling.