Walkabout: Don’t come knocking

Walkabout (RE: Jehovah’s Witnesses protests label ):

“I don’t know about the Russian Jehovah’s Witnesses, but the ones that have been coming to my door almost every week for the last couple of months are trying my patience. I wish I had their home addresses so I could knock on their door over and over again. Knocking once and then quietly departing should be standard procedure. I have always ignored them but that doesn’t seem to be working.”

Question: Does anyone know how you get off the lists of religious groups who send out door-to-door missionaries?