Your issues is complex. There are problems with the strata manager; the contractors and the strata committee.
You could be overwhelmed by all the alleged wrong doings, so break up the issues into parts.
Let me at this point focus on just one aspect.
Part 1 – poor behaviour by strata manager.
List what you consider are reasonable requests for information you sought from him, but were denied. Also list EVERY SINGLE INSTANCE where you feel he lied, misled or deceived you.
Then call Fair Trading 13 32 20 and choose the option relating to property professionals (or real estate agents). If you select the wrong option, when the call is answered, ask to be transferred to the section relating to property managers, in particular stratas.
Tell whoever answers that you believe the strata manager is acting in a manner contrary to what is demanded of him by the Act under which he is licensed: Property & Stock Agents Act. That act lists requirements with which he MUST comply.
Ask FT how to lodge a complaint and you’ll be directed to the website.
Lodge the complaint online. It’s free.
If your complaint is clear and you have evidence to back it up, FT will investigate.
Before they do so they will (a) email you a confirmation that your complaint was rcvd and (b) 7-10 days after you file the complaint they will call you to discuss before telephoning the agent and rattling his cage.
Don’t tell the agent of the committee that you filed a complaint. Let it be a surprise!