I got a call a few days ago from this number - said he was an IRS agent and started asking if I knew I had unpoaid taxes? when i asked - since when does the IRS call people to ask about unpaid taxes he just cut me off and kept going with his script. Then I told him to send me a letter in the mail and he hung up.

Same person called today. Said his name was Officer David Cooper from the criminal investigation branch of the IRS and asked if I knew i was a subject in an IRS investigation.I could tell he had a heavy accent - suspect Indian.  Told me they sent letters in April and September of last year and now if I dont call back in 2 hours an arrest warrant will be issued for my arrest. Then asked if I have a criminal lawyer he can contact. Verified my name and address. It was so obviously the same person who had changed his story about the mail because I asked about it...