I think enough time has expire for you to make an application to NCAT (or threaten to) under section 232(d)
The committee cant sit on their hands for ever.
It may be better to go to the tribunal in any case, as they can make orders which are enforceable (which a verbal agreement by the committee is not)
The orders specify what needs to be done and by when (but you have to provide the text for the orders, so a lawyer to help you draft this is useful, though the lawyer does not need to represent you at the tribunal)