My neighbour is a nightmare. What can I do?
NOTE: I originally posted this on r/Advice, but Reddit suggested to me to crosspost it to this subreddit as well which I consider to be a good idea since I might get more suggestions about what to do.
I have a nightmare neighbour that moved into the flat above me a few weeks ago.
The neigbour living there before this new neighbour was absolutely great. He lived there for about 4 years and we got along really well, as I do with my other neighbours. Gay dude who fled from Saudi-Arabia and worked at a fast food chain. The balcony of what used to be his flat is above mine.
The guy who moved in is an immigrant as well and from a Moroccan or Saudi-Arabian background (matters for language later) and one of the biggest assholes I've ever encountered.
My first indirect encounter with him was at about 3 AM in the night from a Thursday to a Friday. He was on a phone call with someone and was apparently fighting with him, because he was SCREAMING into his telephone at that time in the night in what I can only assume was some Arabic language. Not for a minute, not for 5, but for half an hour. With an open window so that everybody could hear it. Now, it's summer here and this was during a heatwave. Nobody here has AC so basically everyone in the neighbourhood got woken up from that. People went onto their balcony and told him to shut up. For about 10 to 15 minutes. He did not close his window nor did he shut up. I was steaming, because I had to get up at 6:30 AM the next day.
Next time, he was screaming at nighttime (about 2 AM) again for about 2 HOURS, but less regularly. This time, I had it. I got my clothes and went up there and rang his door bell. He didn't answer the fucking door for 5 minutes. After he finally did, I explained to him in courteous and kind words (although I was fuming inside) to please be a bit quieter at night and maybe, just maybe close his window. He told me is watching the world football championship (Turkish match) and that's why he is so loud. No excuse. Nothing. Then he looked at me expectingly as if that would now clear my issue and now would be my time to go and for him to continue. I pressed the issue on and explained that I would need the sleep for my job on the next day. He responded by saying that he needs to get up early regularly, because he is working as a geriatric nurse. But smilingly, he added that he only does that to get a German passport and that I can't tell him to do anything and should leave, because I'm not an official. I've lived along countless immigrants next door, work with them every day and I NEVER heard anything so outrageous in my entire life so my jaw dropped. (I don't want to discriminate migrants. This guy is the 1 foul apple in 100.000 good ones.) Nevertheless, I told him that I may not be an official and would like to avoid causing any trouble, but that he could meet some officials if he doesn't at least close his window. With a fucking please and cherry on top. I probably shouldn't have been so nice, but to be honest, I usually don't like to get into a fight with other people, especially not neighbours who I might see over a longer period of time. Anyway, the last bit seemed to have done the trick and while he still continued to be screaming at this pc screen or whatever, he at least closed the window.
Now the next weeks, I discovered more and more strange items on my balcony. Snickers and Mars wrappers, small bits of wood, small food waste. At first, I thought nothing of it, because birds occasionally come to my balcony to sit on my plants and sing the song of their people. It's windy sometimes as well so I went full Oblivion NPC and said to myself "Hmm, must have been the wind.".
But then I found items were I was sure that no bird or wind could have brought them there, because they are too big and/or heavy. One end of a plastic curtain poles (30cm), big empty plastic bottles, metal debris. So this guy was flinging his trash onto my balcony. That's not a thing that can just happen. You deliberately have to swing it around the edge of your own balcony to get it onto the one below. Although I did not observe this directly, I knew that this was the case, because on the sidewalk below, there were MORE trash items on the exact same angle/line as the other trash items, but he apparently didn't get them around the edge so they fell down. At this point, I had enough and called my landlord about it. (I'm tenant of a bigger landlord corporation.) Unfortunately, the lady told me, they're in the middle of renovating their own offices and their trusted legal counsel just went into pension (they're trying to find a new one, but it's apparently difficult). They're aware of the "vocal" problems with the tenant already, but I would have to wait "9, maybe 12 months and make notes of everything happening", but that "she can't promise anything" and to "just live with it and clean it". So I know I'm on my own for now.
Anyway, that wasn't it. I have purple iris growing on my balcony. A few days later - I had my blinds down - I heard strange metal banging noises coming through my balcony window. I quickly rose from my chair, pulled up my blinds and opened my balcony door to get outside and see what was going on. He must've heard the hasty movements and the balcony glass door, because I saw something long and metal-like with a string quickly being pulled up. Then I saw that all the flower heads were cut off. I rushed to the balustrade, looked up and saw his face and yelled up to ask what the hell he was doing. He yelled back that he was forced to remove the flowers for me, because insects are getting into and living in his appartment. Do mind that those were 6 flower heads and those were only visited by 1 bumblebee. Once. (see picture). Then he went inside and proceeded to bang on his radiator for the next half an hour.
Now, I'm afraid of what he's going to do next. Is he going to fling excrement on my balcony? In my mailbox? Do something else?
I'm usually gone over the weekend, but I feel like I can't go anywhere now, because I don't know what's coming. I don't have the time and money to just move somewhere else. I have trouble sleeping, because it's either some shit happening there or I'm worried that he's going to do something while I'm asleep.
I don't even know this guy's name, because he has removed his name from his doorplate/nameplate that is usually next to our doors in the building. Probably to stop people from being able to name him in complaints.
I'm at my wits' end here. I've never encountered such a person and have no idea how to deal with this. Can anybody tell me what I can do about this?
