A call blocker can help. Also do not pick up on calls you do not recognize. The callers are hard core scammer/extortionists located in India and Pakistan. There's no way to stop the calls from being initiated.
I received a call from a Sean asking me for my attorneys name and number. I have no idea why he is phone me. He wont tell me the details of the law suit.
The first time, I knew it was a fraud/scam b/c I never been to such places they mentioned to receive tickets and I know the General Attorney from another state would never call me to collect money but went along with their story. About 15 minutes into it just when they try to seal the deal and have me wire moneygram to them, I asked them to wait while I send money. I placed the phone on my butt and farted real loud then asked, "Did you get the money?".
Today was they called me again, I did the same thing except towards the end, I said, "APRIL FOOLS!"