Yes, they must be making the rounds today. They've called my home number 3 times today, says "Unknown Number" in caller ID and they leave no voice mail message on the machine. I did not answer. Thanks for these messages; now i know not to answer. I'm unlisted, so don't know how they got the number if it's a commercial pitch of some kind.
I just managed to get through. The name of the company is Landmark something and they do everything from surveys to telemarketing to debt collection. I got their voicemail and the last option was to leave a message to be removed from their calling list. We'll see if that worked.