You people are doing it all wrong. When you receive a call from these people, talk to them. Let them know that you are willing to talk to them all day long. They do not want to waste their time anymore than you want to waste yours. I told them I was willing to talk to them all day long, and waste as much of their time as they were willing to waste. We can be just as irritating as they can be.
Yes, please provide us the information. I would like to contact them, leave them a message, email them requesting to be removed from their contact list.