@Brandon9000,
Not being right there, the best I can think of off the top of my head is the head-butting example between my wife and a neighbor from some years ago.
Any-who this neighbor never bothered me, but my wife had a bee-in-her-bonnet for this neighbor, whom I'll call X.
Any-who X invited a man to live with her, and this man was doing once work upgrading the house in exchange for room, board, (and sexual favors I might assume).
Any-who, my wife, in a spurt of evilly-enlightened-retribution anonymously contacted the city's permit division, to inquire as to whether permits had been taken out for X's renovations.
Any-who, it turned out there were no permits, no inspections, not even notifications given, thus X had to pay fines, take out permits, and undo/redo a number of the upgrades!
In consequence of this, her friend vacated, her house stayed unfinished for a number of years and X was so miffed she went about the neighborhood inquiring as to who had squealed on her.
Naturally enough, everyone denied involvement. So, at least in my wife's eyes, X had her comeuppance in full.
Now I understand you are looking at a somewhat different reality, but I assure you the essential thought processes are similar.