The guy who complained to me earlier got scolded by some other neighbours. Hahahahahah...
I think my mom spread the news to these pple and these pple think the same as i too.
"Don't complain when you are doing nothing"
One of them told me that this guy chickened out when he was told to complain to MPPJ, say that he couldn't do it. Guess that he doesn't want to bring trouble to himself.