Annoying Neighbors playing loud music

So this family who lives behind our home is playing loud music, and now it's getting more annoying to us as that guy has bought a new JBL. We informed them about this noise 2–3 times, but they never listened. Since we informed that recently again they started to play it even louder. We call the police too, but they do not care that a lot…

What we can do about this ?

We have taken video clips and audio clips of them playing it….