Left recorded message about enforcement action and threats of court.  Requested I call back.  Did not.

Same thing about enforcement action and threats.  Tried to pick up the call from answering machine.  It is a recording.  I like how Alex Ferguson has a thick Indian accent.

Just got a call from them too.  Same thing claiming they are from the US Treasury.  It was a pre-recorded message. They claim court action against me.   LOL.  I did not answer the phone.  I called them back and and the same voice answered.  I dialed a *67 so they could not see my phone number.  I just hung up.  Sometime when you call back those numbers it turns out to be discontinued.  I'm not sure how they do that.
A person named Alex Ferguson is used on the recording and and is manning the phone.  I'm not sure how they do that.
Actually all calls from the government use US Mail.  Very rare by they phone.
It's a total scam.
Watch out!

I called this guy back as his calls are becoming regular and a pain to deal with.  I asked him who he was trying to reach and he said, and I quote, "[***] you lady" and hung up on me. :-)

I had the same thing happen to me from a different caller. Asked them who they were after they had been using a pleasant voice, and the said F... you a..hole. Guess I was right to question.