It's an IRS scam. They called me yesterday and I blocked them. They called me today and left same message as you. I couldn't pass up the fun so called them back. Some guy with slight Indian accent answers. I told him to bring it on MFer. Called his mother names, called him names and told him BRING IT ON! Also told him he's been reported and everyone knows it's a scam. He asked if I wanted to add anything else. Called him a few more choice names, (witch with a b) cussed him up one wall and down the other to a fair thee well. He finally hung up. If they call again they will get more of the same. Don't let them scare you. It's a SCAM.
Have been called by this number for the last 3 days. Robot call trying to scam. Personally know the Feds or the IRS would not call about matters. Do not give personal information or financial. Hang up. They are scammers!