Complain about neigbours

Hello! I want to complain! I can’t stand my neighbours longer! Your tenants live here only a month, but they fill up the cup already. Theirs baby has been screaming all days and especially nights since they have moved in. I have been having headache for a week already. My eyes are red because of the sleepless nights. But it is only the half of it. Noisy parties have been being all the weekends in their flat since they are here. And what is more. They have been leaving rubbish in the corridors after these parties and haven’t been taking it out till Mondays or even Tuesdays. Order and smell have been being unsupportable. I can’t stand these people longer. Maybe you can say something for them, because I don’t want to live like this longer.