The fraudster left a message on my phone stating he was from the US Treasury and I had done a "Serious Addition???" and to call him back and cooperate. Very thick accent.
Just got a call from 213-293-3920 saying he is with the US Treasury. Heavy accent. He said, ignoring this call will be "an intentional second offense." I will need to appear before a magistrate judge or grand jury for a federal offense. "I advise you to cooperate with us and help us to help you."
I got this same call. I told him I didn't know who the hell he thought he was calling and threatening and that I didn't appreciate it. I told him check with your supervisor, we don't owe taxes. We took care of that problem and sent the paperwork registered mail and have signed proof.