called this morning.

Called this morning, left a VM. It's a tax fraud thing against my name. Couldn't be true.

Told me he has a warrant from the i.r.s.

The IRS does NOT call you.  They either send you a letter, or they appear in person, and show you an ID card.

The IRS does NOT have to file a lawsuit.  They are an administrative agency.  They tell you how much they think that you owe, and you either pay it or you don't.  After that, they can seek administrative remedies, without going to court.

Did they threaten to have you arrested?  The IRS doesn’t do that either.  It's an administrative agency.

Are they going to send a sheriff to serve you papers?  "Sheriff" is not a Federal position.

What else did they threaten?

These idiots called me saying I had an appt with IRS magistrate and i needed to call them to avoid this situation. Its pure BS!!!