I got the same call. I guess I missed it because it came in September and I caught it while going through old voicemails. I knew it was total BS but I called back anyway just to see what they'd say. I got a voicemail asking me my situation so I could be moved to the top of the priority list. I hadn't even finished listening to his message before he called back. I told him I had received a message about a "Federal Investigation" and he told me he was sorry and that it was a mistake. I hope people don't actually fall for this stuff.
An indian man stating the IRS is going to arrest me for tax evasion. If the men in black don't come to my door I'm good. I won't be calling this whacko back, he can go play in traffic.