Contact TIGTA to report these calls.
You can call toll free: 1-800-366-4484
YOu can use their “IRS Impersonation Scam Reporting” web page.
https://www.treasury.gov/tigta/contact_report_scam.shtml
online form to launch compliant, please do immediately
This press release is over a year old :
https://www.treasury.gov/tigta/press/press_tigta-2015-01_home.htm
Treasury Inspector General for Tax Administration
Press Release
January 21, 2015
TIGTA - 2015-01
Contact: Office of Investigations
Call toll free: 1-800-366-4484
J. Russell George Urges Taxpayers to Be on "High Alert" to Phone Fraud Scam
called me 3 times at work and left threatening voicemails. i called the number back and the nasty man on the other end tried to tell me I was being sued by the IRS. I laughed and then he made rude and threatening comments.