two things come to mind....one, it's in the past and not repeated.
two, you only have hearsay to go on.
let it be. we can't control others.
the former neighbors to one side actually called Animal Control because the one b!tch thought she saw my husband hit our dog. so Saturday morning at about 9 we got a drop in from AC.
one night we had a fire going in our fire pit, which is about five feet from the LAKE and yeah it might have been a bit BIG, but she called the fire dept. who tromped thru our neighbors yard on the other side as our property is gated. I spoke to them thru the fence/shrubbery, invited them over if they wanted to check things out, they just told us to have a hose handy and left.
she also left a copy of the local noise ordinance in our mailbox, inferring we had the stereo too loud.
we just ignored them. as is they did not exist. ok, so the day the eagle dropped the dead rat in our yard, we did pitch it over the fence. but other than that we let it be. they weren't worth the trouble.