I wish all neighbours were like you! I have the opposite problem, I caught my 2 kids, 5yr old and 6yr old, different families, scribbling all over my car with stones. It's an old car, 1999, but they have destroyed it. The bonnet is covered in houses, cars, stick men, and yes, they signed their names. I didn't mind that so much, I thought that was innocent enough, but they had done scratches the whole length of the car. It was so big, so damaged, it was hard to be angry! I caught them, went straight to the neighbours, I wasn't angry, in fact probably too calm, just said, look, it happened, we'll price it and share the costings. My 3 yr old was with them, but he says he didnt touch the car, and the other 2 didnt say he did any, so I believe him. But I did say I'd chip in something because he was with them. Another stupid naive mistake of mine. I got a quotes of over €1000 to re-spray the car, too much for an old car, so I said I'd just do the bad bits, so it would end up costing €150 each. Which I though was fair enough. I've just had one family over, hassling me, saying its too much, then examining the car, saying I was lying about the scratches, they were old. The other family are avoiding me completely, haven't seen them. I now wish I had called the guards when it happened, or taken photos of the scratches. So, if I were you, I would take photos, something to prove you are not lying. I know you are coming from the opposite side, but you try to be nice, do the right things and it gets thrown in your face. I'm not quite sure what I can do now. I feel a bit intimidated.