I have a client that I did some local SEO for. He got ranked pretty nicely, but since then he has been getting around 3 to 5 calls a day, all different numbers. They claim to be Google saying if he doesn't pay them for a listing nobody will see him on Google anymore. I told him it is just a scam but is there anything he can or I can do to help stop these people from calling? I'm assuming this type of scum doesn't give two shits about the do not call list. What would you do?