Just got the call from the "IRS" asking that I call them immediately. I had gotten a similar call last month. I did call back just to play with them a bit. Gave them a totally wrong name and phone number and they fell for it. Don't feel like playing this time. I wish there was "scammer" amongst all the choice this site gives us.
I received the same message on my phone this morning. I am Canadian and phoned the local RCMP who had no knowledge of the scam. Do not know what they would have to benefit from such a call. I had the police call the number and they reported back that it was no longer in service.