Complete SCAM - Be Careful -
Goes on to say you owe money to the IRS and if not payed that a more serious problem will happen. They claim to be there to help you out.
Scam - Left a message that they were the IRS, call back immediately before they file suit against us. Called number back, the person answering the phone didn't want to tell me who he was until I threatened them. Then he claimed I reached the IRS. Told him he was a liar, the IRS doesn't answer the phone "hello". They answer with their name followed by their ID number. Watch Out if you get a call from this number!
Left recorded message threatening to take legal action if call not returned. Online comments identify this as a SCAM claiming to be the IRS - an attempt to extort money claiming taxes owed.