This is a scam. It is supposed to be the IRS calling about back taxes.

Scam call saying she's from the IRS.  Calling me about back taxes and I may be arrested.  Originates from Vancouver, WA.

I recvd a phone call saying that the IRS is suiing me for tax fraud.  A lady left a message for me with brief explanation (she actually sounded rather robotic" and then dumb me I called the number back and some guy with an accent answered and said he was with IRS accounting dept and that I was being sued for tax fraud.   This is scary to me.  I remember he answered with "hello" and then I told him what I was calling about and I asked him what is this for and he said it was for tax fraud.  When I started asking more questions, he got silent.   Then I said, "this is a scam" and I hung up.  Before I hung up, I asked him where he was calling from and he said Washington.

Claimed to be Officer Jenny White with the IRS tax fraud division.
Left the above-number as a call back
Has called three days in a row.

IRS scam.  Robot call from state of Washington saying the IRS is suing me for tax fraud and that I have to call her back.  It's very obviously a scam so I didn't bother calling back, but I am notifying the IRS.