[Por_sha911]

I found this in an article. I wonder if anyone has tried it?

If you really want to get someone’s attention, file a lawsuit. For years, robocallers have hidden behind the first amendment but recipients are starting to fight back, as are carriers, government agencies and third-party companies.

Far more powerful than a “do not call” registry, Robo Revenge is an app that is specifically designed to threaten callers with legal action. The app uses a fake credit card number to mislead robocallers and then identify them, allowing plaintiffs to sue for up to $3,000 per call.

https://www.komando.com/security-privacy/trick-robocallers-with-a-fake-phone-number/579296/