Just got a call from Steve Martin myself. Latin accent. Thanks for posting all this info. I googled the number on the off chance I'd find something like this site. Whew. Nasty scam.
Received second message from Steve Martin. Strong Asian accent with the identical message claiming to be from US Treasury. Reviewed calls list and first one was from (747) 201-9800. Threatened if ignored would have to send to magistrate for legal action. Ended with "help us help you".