That they have been trying to call me. Says that this is a final notice. That The IRS (Internal Revenue Service) is filing a law suit against me. To call this number.  And find out about it.
But the IRS DOESN'T CALL OR HAVE 3rd party agencies do their dirty work for them.

Had the same thing happened to me today....

Received call from this number stating that they had been trying to get a hold of me, and it was a final notice from the IRS - INTERNAL REVENUE SERVICE- and that they were filing a lawsuit against me. I needed to call back immediately.
I ain't nobody's Huckleberry so I of course research and find it to be scam, file a complaint with the FTC but CAN'T resist messing with these idiots!  I'm at lunch and got a few minutes to blow so I call the number and they have so many scams they can't keep them straight! foreign voice answers the phone states he is from an attorneys office so I play along, he actually threatened to send the police to arrest me!  Told him I would let him know exactly where to find me!  Irritated him even more then I informed him I work just outside the Sheriff's department so it shouldn't take that long!!! CLICK

Got the same call yesterday telling me it was the IRS and they trying to reach me and its my final notice and that they have a lawsuit against me and i need to call them back at this number. Ya right!!

This number called this morning. The IRS would never call and leave a message. This is BS