Got calls from 360-566-2416 and 202-492-8625 saying they were IRS and filing a lawsuit and I had to call them back immediately. I did not. You can go on the gov IRS website and file a complaint against these people. At the top of this page is a place where you an put the number that called you (put in the 202 number and scroll down on the comments. There is one from a retired IRS guy who give you a website to go to to log your complaint. REMEMBER, DO NOT CALL THESE NUMBERS BACK!!!!!!!!!!
Knew it was a scam, I called them back repeatedly, pretending to be an Asian Indian, a gay crank caller looking for sex, telling them I WAS the IRS, that I was was looking for a hitman, etc.