I received a call from this number saying I needed to have my attorney call them back. I called back from a recorded line, they answered "IRS". I told them I was recording them and told them I was going to report them to the police and play the phone to them. Ok we won't bother you anymore.
They left automated message saying this is Cathy Williams with the Internal Revenue Service- don't discard message before legal action will be taken. I called back and some foreigner answered and I heard people talking in background and I just hung up. Doesn't sound like a legit IRS phone call. Pretty sure if I owed the IRS money they would send me a certified letter.