A programmer created a script that allows his computer to automatically call up to 28 times / sec the "scam" "companies" that are calling you.
This programmer implemented his system on a scammer company that had called him a few days earlier pretending being US tax services. This company urged him to send them $ 8,000 to regularize his situation.
The hacker launched his program which automatically calls the company, by automatically broadcasting the following message: "Hello, you have been identified as a scammer, so we will flood your line to prevent you from scamming others. This services will Stop when you stop ".
He then recorded the company getting spammered by these voice messages. We can hear telephone operators getting angry, saying that indeed they are scammers and insulting the voice message.
So you know what yo do, if scammers call you now :)