This number calls and leaves a voicemail saying that the IRS is investigating me and an arrest warrent has been issued for me. To resolve this, they ask that I call this number immediately. I know, hilarious. Number is blocked and you should never call them back.
Got a call from this number today to a business line. Obviously a scam. The IRS would never call you and tell you they're filing a lawsuit. DO NOT CALL THIS NUMBER back.