Says IT'S is filing a lawsuit against me & I need to call this number. Scam!

I got a call from this number, the robo-message said that I was being sued by the IRS and that this is the last time they were calling (?????) I filed a complaint with the CFPB and called them back.  When I finally got through "Shaun Miller" said that they work with the IRS and when I started asking them about their company, he said "wait wait wait ma'am" and then told me to go F&*$ myself and hung up.  I called back and after haggling with "Shaun" to speak to a manager (he said that he is the manager, I said "really? You're the manager of the whole IRS and you're answering the phone?") a Paul Walker got on the phone.  He said that they are the IRS and that I was deflecting the situation (I never gave him my information so I'm not sure what I was deflecting).  He then said that the first person was right that I should go F&^! myself.  I told him never to contact me again.

Called and left a message that I'm being sued by the IRS. I don't think the IRS sues people.

I got a message from unknown caller at 682 514 6262. they said this is your final call. the IRS is filing a law suit against me. No reference to my name or any other Information. 6/8/15

“Hello, we have been trying to reach you. This call is officially a final notice from the IRS, Internal Revenue Service. The reason of this call is to inform you that IRS is filing a lawsuit against you.”

I'm glad it's the final notice. Now they'll stop calling me.