How to Deal With a Noise Complaint

I think because, you know, when I first moved in, we wouldn't even like walk at full speed around the house. The apex of 2am streams did the push. When I got the complaint, I hadn't done any late night streams that I would say were loud. So I wonder what did it because there was somewhere else full on shouting at like 2am. It's kind of cringe. They didn't even tell me if it was like someone from the same building. Tell me who's a little bitch so I can sound proof that sound.