It sounds like all the items you mention are common property, and unless your Plan has a Special By-Law in place stating that it’s inappropriate for its Owners Corporation (O/C) to maintain, renew, replace or repair any of those items (and that’s unlikely), then that responsibility is with your O/C.
So if the person you contacted is your Strata Manager and your Plan is in NSW, then you need to remind them of the O/C’s unfettered responsibility under Sect 62 of the NSW Strata Schemes Management Act (SCMA) to “properly maintain and keep in a state of good and serviceable repair the common property….”, to insist that all necessary repairs commence within a realistically short timeframe, and to advise that if they don’t (commence) then you will be seeking Orders to require that from the NSW Civil & Administrative Tribunal.
IF it comes to that, you’re seeking Orders under Sect 140 of the SCMA using THIS form.