Getting phone calls from this number and another in the Pittsburgh area: 412-773-8557. Figure it's a computer calling. No message is ever left. Will keep a log and submit it to attorney general if it continues.
The machine picked up the call, and they put me on hold from pickup. After a few seconds of "Stay on the line," someone asked for me by name. Then after another "Hello?" hung up.
I use a lot of freebie sites, and some want my ph#. My guess would be that these are the people who follow up.