The are laws. But Indian and Pakistani scammer/extortionists ignore them. Invest in a call blocker and do NOT pick up on call numbers you do not recognize.
Got the idea to call these weasels back and just let them run their spiel. Turns out they are after your CC info. I offered to settle the "debt" in cash. That confused them.
Finally got the same person twice. Really upset him. He suggested I do things to myself that I don't think are anatomically possible. Anyway, I suggest LOTS of people call them and tie up all their phone lines.
Called yesterday, said they wanted to help us with an infraction; failure to return their call would be an additional infraction. Obviously a scam. Called again today from 786-258-0980, same story.
IRS scam - I (supposedly) did something wrong and US Treasury is contacting me, warning me not to ignore this contact. Robocall was male's voice with Indian accent.