We've had problems with these neighbours before. I once asked their teenage boys really really nicely to play around the corner as they were making a racket with their skateboards. I was trying to get my screaming 7mo to sleep at the time and in hindsight I probably shouldn't have said anything but I was so sleep deprived at the time having had no more than 2 hours sleep at a time back then. They were fine about it but told their dad who proceeded to make life awful for us by getting on a mobility scooter which he doesn't use in day to day life but just "plays" on it, he and his kids take it in turns to race around our cul de sac and he would drive up and down in front of our house playing music on a getto blaster. He did this for days on end at our dd's bedtime. I didn't even know they still made getto blasters! In the end I went round and asked to draw a truce. He claimed it was just a coincidence that he chose to play music in front of our house when he lives round the corner.
Things calmed down after that and we haven't had any problems for a year but they are back out there tonight kicking a ball up against our house and the thudding is really loud. I'd like to ask them to stop but am worried that I'm either being precious or that it will just cause more trouble for us. I'm probably getting upset about it because of what happened last time so wanted to get other people's views.