Did my old neighbours who recently left move next door to you?
We had this same exact problem last summer, the neighbour painted our fence and we actually did some looking into it and come to find out they are not suppsed to do anything to your fence without your permission. We found out a lot of info regarding this on
www.gardenlaw.co.uk And as for the balls coming into the garden I have a lovely and mad ball crazy doggy who will gladly take care of that problem for you.
This is what eventually stopped the balls coming into my garden as Phoebe my dog thought they were all hers.
