I just experienced this as well. Very upsetting. Called and had me were worked up saying that I owed money on my taxes from 4 years ago. Asked if I had a lawyer present and they said that if I didn't pay they could put a hold on my house, credit card, car, etc. They kept using my maiden name and were very pushy and rude to say the least. The man called himself Officer Jerry Martin and he gave me a case file number and transferred me to the person who asked if I was willing to settle or if I was going to fight this. I told him I needed to speak with my husband and he hung up on me. I can't believe there are people like this.
Scam. I effed with them too. I had a little free time so I kept calling them back and screwing with them. They started hanging up or they would let it ring and ring and ring and then pick it up and hang up. One thing I learned about the scammers is that they do not want their phone line kept busy, so if you keep calling them I hate that because that line is a money line. Sometimes I just blocked my number, and sometimes' I didn't. Hell, they already have my number. After some fun with them I blocked their number.
I received four calls today from +31 444 99 39 0 saying they are IRS filing a lawsuit against me, and that I need to call them back. It is an automated call. I know I do not have any problems with the IRS, because I am paying tax payments through direct deposit, and I haven't missed a payment. Has to be a scam.
tell them that you work for the cyber crimes division of the U.S. Department of Justice and if they will simply stay on the phone a little longer you and a few other agents will pinpoint where they are located come to see them face to face.