I called the number back and a man said "IRS, what is your number so I can look up your files?" I said, nope can't do that...the IRS doesn't call people." Then he said, "so why don't you go [***] yourself." What a joke.
So far I have received a call from this number four times. The first time, I tried calling it back and got a recording saying the number was not able to be reached. Wish they would stop calling!