Funny, they called claiming to be IRS and that I owed thousands to them and that unless I paid $100 up front I wouldn't get arrested. It's FAKE and these people deserve the worst.
This number called a federal agency and left a voicemail threatening criminal action. I called them back to inform them that they had called a federal agency, and that they were being reported. He stated he was IRS, I told him he was not, and he hung up.
Message stated they were calling from the Dept of Legal Affairs, provided me with my case#, and said I needed to call back to avoid legal action being taken against me.