Check your by-laws – you should find that your are entitled to the peaceful enjoyment of your lot.
You should take this complaint to yuour EC and/or strata manager asking them to issue a Notice To Comply which says that the gang upstairs should either modify their behaviour or replace the carpet on their floor (or both) or face fines and orders at the CTTT.
If they EC won’t do this (and sometimes they don’t) then you can take action at the CTTT yourself. In the meantime start gathering evidence (statements from neighbours, recordings etc) to support your case.
You don’t have to put up with any of this. It is NOT part of apartment living, as many like to say. Some selfish parents have dumped their noisy brat kids on you and you are entitled to say ‘enough!’