To complain about the conduct of a lawyer, you can contact the Legal Services Commission. To make the complaint, follow the instructions included on the website:
Email: lsc@lsc.qld.gov.au
Website: https://www.lsc.qld.gov.au/complaints/how-to-make-a-complaint
If you wish to complain about a member of the Queensland Police Service, you can lodge a form online with the Crime and Corruption Commission. https://www.ccc.qld.gov.au/corruption/report-corruption