Thank you for all the advice. I think I will write a friendly letter and send it by certified mail. I may call as well, and give the guy a chance to explain. Many posters mentioned judges and courts, but I think it would be difficult to quantify any damages (loss of privacy?) that may justify a suit.
The door was unlocked when I checked, there’s no doubt about that. We always lock it, and we get in and out through the garage most of the time.
