Apparently they are still at it. Received two calls yesterday. One at 5:45pm and the other at 8:30pm. Of course I didn't answer. I assume all unknown calls are scams if they don't leave a message.
This 405-604-6926 called me tonight, at 8:45 pm, and the Caller iD said Pickup Services. I answered then hung up quickly, in case it was an auto dial computer, which usually stops these calls. After reading here, now I think it might be a scam of some sort.