This is a scam to not reply they are trying to rip people off and make them afraid that they may own money to the IRS. IRS does not call they always send a letter if there is a problem that you can't respond. Do not fall for the scam.
Got a couple calls from this number(voicemails) this afternoon claiming I am being sued by IRS. It's a scam. Wondering if it's related to a scam on Craigslist I responded to regarding renting a property.