How can you tell Jehovah Witnesses',respectfully not to come any more? And they not come?

Next time tell them that you appreciate them trying to help but that you are not interested in leaving your faith and that you will seek them out yourself if you feel a change of heart. If that doesnt work or you want to talk to someone else i would call the local church and tell them exactly what you told us and ask how to get your house off of their list (or on a list that prohibits them). Or maybe put a sign on your door lol.