I received a call for the same reason. They hung up twice because I refused to answer "personal" questions. It's definitely a scam!!!

I got a call from this number they are posing as "The Internal Revenue Services" and they are a scam. I have reported
them to the IRS and the landline carrier, Integra Telecom, who told me this is not a valid number for them in the WA
state area, so they are covering up their phone number from another country. I have been calling this number non stop to harrass them out of business. Try it! Hit *67 then dial 1-206-436-4708 and wait for them to answer and just talk to them, because if their time is taken up, they can't be scamming. Star 67 before a number blocks your number from being read.
When their aswering system picks up, I put the phone by the CD player and play rock and roll to them for about 3-5 minutes!
Hey it uses up their space! the more of us who do this, maybe they will have to close up shop. who knows.

I'm crank calling them lol so fun

This is a scam that was reported on my local CBS network last week.

They harasse us. They said that they are from IRS and what should we do?

Thank you