My life has been turned upside down.

All my life I lived the way my parents raised me. I am always friendly, I love people, I do nothing bad to anyone.
This always applies to all my neighbors. It's even better with them.

So... More recently, new neighbors have appeared behind my wall. They are two adults, big men. During the day they are quiet, calm people, but as soon as the evening comes, their friends, men and women, begin to come to them. They start drinking alcohol, screaming, dancing, listening to music until 5 am. All this time I can not sleep, and I have to work at 7 in the morning.
To whom I just did not contact ...
I came to them myself, but they almost pulled me in.
I turned to my friends, but there were threats. I contacted the security of our house, they also did not help.

And we have a curfew, as you know.

What should I do in this situation? Should I endure it all? Should I be afraid of threats?