you really should just ignore them, my mum got into a fight with the neighbours a while ago, about all the swearing and late nite loud parties they have, (its pretty bad, horrible lanuage and really loud music all nite) Since then they do burn outs out the front and throw their empty beer bottles in our garden and flick there cigirettes butts over the fence.... And when they see us out in the yard they make a point of talking real loud and using bad language, mum called the cops a few times but they wont get involved in neighbour hood disputes..