I've been on the National Do Not Call Registry since 2004. As of 8/01/2016, the maximum fine is $40,000 USD per call.
Three days ago, someone called me claiming to be from a certain bank where I don't have an account. I informed him I was on the registry. I told him to remove me from his list. I informed him of the fine. I warned him that if he called me again, I would report him to the FCC.
He called again about 25 minutes ago. I told him, "I told you the other day that I was on the Do Not Call Registry. I told you to remove me from your list. I am now reporting you to the FCC."
He immediately hung up.
I immediately reported both calls to the FCC. I'm certain he's made more than two such calls. I'm also certain he will be unable to pay the fines for all those calls.
So even though I'm kinda peeved, I feel good for reporting him.