You can call 1-800-366-4484 or report it at........treasury.gov/tigta/contact_report_scam.shtml
This information was in April issue of Costco magazine. I received same call last week. It was a recording
left on my answering machine.
Just got the same call as everyone else saying lawsuit has been filed, call immediately. Thinking about calling the true IRS and let them know, hopefully that would stop some calls for others!
I received a call at 7:20 am. The caller ID said Pay Phone. Left message to call 360-489-6074. The pay phone was 303-385-0493. I did not call back. The message was the IRS is filing a law suit.