The Indians or Persians or whoever have my number and call several times a day about Amy Medicaid benefits. I carry on a conversation with them and ask them silly questions until they wise up. I hate these people. They are scammers and I ask them why they are scamming people. That will usually finish the call.
I used to do that; then I realized I am wasting my time wasting their time. And; it does not slow them down. And, blocking the numbers they call in from does not help.