This number is calling saying that they're the its but they won't send proof.

This is a scam, I called the number back 10 times, got the same guy claiming to be a IRS officer. He was also the same guy on the recording. After I question him, he hung up! I called him again and this time, I gave him a few choice "Old English" words, the little coward then hung up again. I have family that works for the IRS and if you get a call from a IRS line it's going to come from a secured line, either NO number or all "0000000!" so don't be alarmed, give' Em a few choice words!!!!! Have heard from the lil' coward since!