It IS against the law. Unfortunately the callers are hard core Indian and Pakistani scammer/extortionists who disregard ALL laws. Invest in a call blocker an DO NOT pick up on call numbers you do not recognize.
ditto to all of the above comments. I told the guy to give me the case# or complaint# in which I would contact the 800 IRS# to verify. That stopped the scammer in his tracks. He ended the call abrubtly.
Rcvd call on cell phone, from Graham WA , June 16 & June 17th, saying important that I call right away to discuss serious allegations.
I am on national no call list for both home & cell phone.
Just received a voicemail threatening me. Claims to be IRS and that I have four serious charges pending against me. To call them prior to them dispatching someone to arrest me.