@dwmyhome said:
no one is listening to us.
Apply to Fair Trading for mediation with the Owners Corporation. If you don’t then get a written and binding undertaking to fix the problem, tell them that you will be taking the Owners Corporation to NCAT for orders forcing them to fix the problem under their responsibilities to maintain and repair common property.
It’s not easy but it does work. You don’t even have to hire a lawyer. There is lots of information on this website about how to do this, if you look around.