Originally Posted by D

If you want them gone for good, inform them that you're an "apostate" (someone that's been in the religion before but has chosen to leave of their own free will).

In the JW religion, that's akin to being the Antichrist. Like any good cult, they're instructed to shun all ex-communicated individuals, so they'll most likely just zip it up, walk away, making a note of your address to inform the other JW's to never visit your door again.