I first received a phone call from 202-506-9216 - a man with a thick mideast accent saying he was from the IRS. When I hung up on him, he called again--very angry that I had hung up. He then proceeded to tell me there was a problem with my "previous year" taxes and I needed to act immediately to prevent problems. I responded that I didn't believe the IRS would be calling on a SATURDAY for immediate action without having first sent a letter and hung up again. Five minutes later I received a call from 415-251-5897, which I did not answer. From reading the previous comments, this number also claims to be from the IRS. I don't know if the two numbers are connected, but it seems to be too much of a coincidence!
i got this calll too. actually discovered it in my voice mail after a few days. call came from novato ca and was difficult to understand but the substance was what everyone else said about a man with a hewvy indian accent who was going to have me arrested. when i call back (the number on the caller id, not the one he left) i get an ad for magic jack.