So I'm fresh out of ideas.

Situation is the following: I live in Berlin, Germany and there are these "nice" people (3-4 dudes, one woman) gathering under my window 5 out of 7 days a week having beers. It's not "some beers", it's a shitton of beers. Specifically, they start around 4 or 5 in the afternoon and start drinking. They keep this up until 9ish, which is when the nearest Supermarket closes. Then, they go for a "last round" consisting of an entire crate of beers, which they then proceed to empty. At some point, they even brought chairs to sit around. Frankly, I am baffled by the amount of alcohol they are ABLE to drink.

Now I am the last dude to envy / shame these guys into having their fun. But these "partys" sometimes lasted until 1 in the morning on a normal weekday. God knows what they are doing for a living (probably nothing?).

Thing is, it started to get a little loud down there. Once you're hammered, things tend to get out of control. Shouting in the middle of the night, loud music playing, bottles falling, you get the idea. So one of these nights, one of our neighbors had it and called the cops on them.

This is where things went completely out of control. The cops told them to fuck off, which they did. But they came back the next day. Of course. And now, they had a mission.

Now the music got louder, more annoying (as in playing the same song over and over again), sreaming, shouting, you name it. What they know is that according to the law, they can be as loud as they want until 10 pm. So they intentionally annoy the shit out of everyone, as often as possible, and then vanish into the night at 9:55 pm. They know what they are doing.

So my question is what to do here.

Obviously, I am NOT looking for answers like "move to another neighborhood", "talk to them", or "hire some local thugs".