This may be an instance where it is better to go Federal rather than local.
Based on your post it seems you may have been bullied based on your sexual orientation.
This is totally unacceptable.
Have a look at the information in this link https://www.humanrights.gov.au/complaint-information and maybe even speak to the people there to see what your options for resolution may be.
For more information contact our National Information Service
Phone: 1300 656 419 or 02 9284 9888