Earlier quoted context omitted.
This sounds like a situation where no one can win 100% of the time. Some people who are left alone after leaving the church complain that they're "alienated" by their neighbors, while those whose neighbors try to keep them involved are victims of "invasive harassment". And those who are content don't mention it, so no one hears about them. Any time I've heard of someone wishing not to be contacted, I've seen members…
> Of course that doesn't stop everyone (because not everyone may be aware of that desire). This is only true to the extent that the church is extremely efficient at tracking down ex-members and sharing this information with local congregations and extremely inefficient at remembering that people have requested multiple times with multiple authorities never to be contacted again. People are visited by members of the c…
If that person is really an "ex-member" (meaning they had their name removed from the church's records), then this simply could not have happened, at least not in the name of the church. I've seen firsthand what happens to a congregation's records when someone removes their name (no surprise - their name, address, etc are removed from the list, and there's no conspiracy of tracking people behind their backs as you seem to imply).
That said, it's certainly possible that someone was operating on old data or otherwise mistaken (maybe the person visiting just asked another neighbor about the person who lived there, not knowing the history, but trying to be friendly?), but I can assure you that the church would not give someone a name and address of an ex-member who's had their name removed from the records.
ADDED: To respond to a couple of replies here: I suspect the church's central records (in SLC) may retain some data about ex-members (I have no firsthand experience there one way or another) - at least where permissible by local privacy laws, but I've dealt with records at the congregation level for years (which is what missionaries or other members would use to contact someone), and I can definitively say that ex-members' info is removed from those records (not just marked as "inactive" or otherwise). Does that mean you will never be contacted by a member of the church again in your life? Absolutely not (for reasons explained above that have nothing to do with the church's records). You will have the same chance of being contacted by a well-meaning member or missionary as anyone else in your vicinity (which is more than many people realize).