Don't let them get away with it

If a JW is harassing, or gossip around.

Simply put, send them a cease and desist letter that you planning legal action against them. They know they can harass you because they know they can get away it. They know if you contact the elders they will just ignore and act against you.

If you want noisy JW out of your life simple put, send them a letter that you will take them to court if they continue and if they do not, take them to court.

In my opinion legal action against a JW is the only way the understand.