This is a major major scam. Don't get fooled like I did. The IRS does not make phone calls. Don't give them your personal information even though I knew better I got caught up in it. The guy's name was Mike Walter with a DC phone number of 202-239-1939. They want you to purchase gift cards and give them the numbers off so that they can collect that that's how they scam you.
Left voice message said irs is going to sue me. I called back. They answered (in thick accent) "irs, can I get your name address and phone number. I asked who they were calling for they she said some name. I told them mine and she abruptly hung up.