I read your question and I understand how difficult it must be to be deprived from sleep and the depressive symptoms that bring.
However I don't think you are going about this the right way, medicines are not the solution, you don't have to risk your life so that others enjoy theirs. Sleep medicines do not work if there is not the right environment anyway.
Please call the police or any other local authorities, I am sure there can be an end to this affair, what they are doing is certainly not legal.
Perhaps you have some reason to be intimidated by these people, but since your life is suffering to the point of discussing
suicide I don't see what can you fear worse than that.
Anyway whether you decide to denounce them or move to another place, I suggest you ask for the help of a
psychiatrist regarding your
depression issues, I assure you there is much that can be done to help, but an evaluation is necessary first.
I hope things work out for the best.