Just got the same call last night (at 5:50pm) - robot-sounding voice - saying that the IRS is suing me and that there is a "non-bailable arrest warrant" out for me. Did not bother to call back, because the IRS will not try to arrest you without visiting in-person first.
Total scam.
I also received the same call purporting to be the IRS and threatening a law suit. Obviously, it is nonsense. We would receive personal service of any suit.
Called the number back and guy with heavy Indian accent tried to get my phone number. I asked for a manager. He denied it. I kept asking to speak to a manager and finally he said he was the manager. I told him I didn't believe him. He said f*** you and hung up. SCAM!!!!
Got the same call 3 times in one day. The first time I called they gave me the same sob story. He said if I hung up they would have the officer come and arrest me. I told him to send him along with his mother and father cause this is a scam. He hung up. Smh