i called the hdb the day before going up to approach that dam
neighbor. the hdb sent email to me that they had already go to that
dam neighbor house and tried to persuade them to reduce their noise
activity. but the noise seems not going down, so i go up and look
for that dam neighbor and den the problem comes.
i ask them to stop playing with that dam ball in a peaceful
manner and 10mins later, wife come down and shoot back me that i am
rude?!?! give so much rubbish reasoning and really pissed me off so
i raised my voice with her. now today his husband not happy come
down at my doorstep to create chaos. called police and they tell me
to call community mediation centre to settle this problem! called
hdb the person who email me back, he say he forgot to tell me not
to go up approach that dam neighbor cos that husband is a hot
temper guy =.="
so the ending is i have to endured their dam noise 
but i find the using bamboo stick method quite good le, at least
can give back some noise back to them. but as for hiring the
foreign worker come to my house, that one 
my parent already cannot tahan foreigh worker liao, if hire them
come my house, i will tio nag by them forever
Mr nature,
I have to spell bad news for you. Your situation is not good. If
you don't get along with co-workers or friends, you can easily
avoid them but if you have bad conflict with neighbours, it can be
very bad, because you see them everyday !
I hope you spoke politely to your upstair neighbour. However,
judging from their reaction, I think you scolded them? I understand
your frustration but if you don't use diplomacy on your neighbour,
if you make them hate you, it can get very messy.
At least if you spoke politely to them, tell them not to play
ball, if they don't listen, it happen again, they don't take you as
a threat. But now, they are angry, I am afraid that your upstair
neighbour may try to take revenge. My cousin once have problem like
you, after he got into argument with neighbour and tried HDB and
police, the neighbour purposely cause more trouble to provoke him
by making even more noise upstair. So be ready, if your neighbour
is hot temper only - ok, but if they are revengeful - you may have
to tolerate this.
Also you effectively involve your parents into the conflict. Did
you ask them for permission before you lodge complain or spoke to
the neighbour?
PS: YOU better stock up on bamboo brooms. You may get ball noise
or upstair noise attack like 2 am. So you better be ready for
retaliation. If your parents stay at home during day, ask them to
use bamboo attack !