You have ‘jumped through the hoop’ of the required Mediation. Sometimes Mediation works and sometimes it doesn’t.
I personally find that Mediation suits ‘bossy’ and ‘assertive’ people whereas it does not suit ‘quieter’ and ‘less confident’ people. Some people are better ‘talkers’ and some people are better ‘writers’.
If you did not like the outcome of the Mediation then you can take this matter further and apply for an Order to NCAT.
The Application Form is below. The last few pages of the Form explain what Orders you can seek.
https://www.ncat.nsw.gov.au/Documents/ccd_form_strata_application.pdf
Also see