Say his name is Steve Martin and is calling regarding an enforcement action executed by US Treasury and ignoring him will be an appearance before a Magistrate Judge or Grand Jury for Federal Criminal Offense.

I not the smartest person on earth but one thing I do know, if the Treasury / IRS wants to contact you, they use US Mail, not a phone number without caller ID. If they want you really bad, they come a knocking on your door.

I just received the SAME CALL from a foreign man who says "HI, my name is Steve Martin.....etc., etc"
With the same threats as the previous commenter described.
WHO AND WHAT IS THIS?
If you call back, it goes directly to an answering machine with NO IDENTIFYING COMPANY/PERSON to verify WHO you are calling.