Look, I'm getting a lot of reports on various things on this thread. Can we agree that the whole thing is a bit off topic anyway and a ranting shop. If you can't deal with that then leave the topic alone. I think in the 5 pages it has run so far the OP has had plenty of potential solutions:
1) talk to them
2) talk to the athorities
3) piss them off by an even greater measure and hope they get the message
4) move out
Two years ago, I was awoken by my neighbors, about 2 hours before I normally wake up.
Thump thump thump... Someone walking, probably he has legs made from lead and wood.
I stood it for a month, then I went to upstairs neighbor, to talk to them.
A tiny lady opens the door, she is maybe 45 kg. Oh, she notices it also, at the same time, she also wakes up to this. OK, sorry to disturb you.
I went hunting for the loud walker. You could hear him walk on 4 different floors in the building. Yes, the same walking. 7 steps up, 7 steps down. I tracked the guy down. He was living BELOW me. The guy was walking so loud, he awoke someone two floors above him. Imagine that.
But, you know, I talked to him once. OK, he will be less loud. I talked to him twice. Third time, he sent a friend, who was standing in my living room, listening to him to walk. This was like in an absurd movie.
But after a while, I had enough. You know,he is actually below me, it is an uphill fight for him. I have a sofa, it is on hard floor. I can lift it up with a hand, an let gravity to the rest. I was relentless, but I only did it when the cyberman was stomping downstairs. It was just fair. Tit for tat. He is not living there anymore.
You cannot change how people walk. It is subconscious. I wasn't raised in a barn by cows, so I don't walk loud, others do. Pick your fights well, and good luck.