Just ignore them. Once they have your number, I know of no way to stop it. If you can locate them, you can always sue for infliction of mental distress or something like that, but you have to have a mailing address to serve the court papers, and you have to get access to their assets to satisfy any judgment rendered. Have you tried the Do Not Call list?
Answered on Sep 11th, 2013 at 11:23 AM