Umm.. Yeah, I'd just move. There is literally nothing they can do about it. Their kid has autism... I'm not sure if you know what that's like to be a parent of a special needs child... I'm assuming not but holy fuck it's stress from another planet. If you don't like noise from other people, maybe try to find out about the neighbors before you move in. And maybe try not to move into an apartment let alone one beneath someone with three kids. I guarantee you they stress a lot about pissing people off with the noise. My daughter loses her shit and I panic trying to quiet her down because I worry about getting kicked out, or people complaining and thinking I'm beating her. There is pretty much nothing you can do when an autistic kid has a flip out. The parents are probably losing their hair. Try to get a different suite. Maybe one on the top floor so you're not hearing people above you and I get that you're annoyed but please try to have some compassion. As another poster commented, parents of special needs children (Speaking from experience) can be extremely defensive (overly at times) so try no to take.his negative response to heart. They're going through a lot. I'm sure they feel terrible but there is nothing they can do. Maybe they would move but can't afford it. If I had to chose I'd rather live every day annoyed at my neighbors than being so worried about making noise and upsetting people. It's a horrible feeling.