If you wish to report poor performance or usability issues directly to the Therapeutic Goods Administration (TGA) via the Medical Device Incident Reporting scheme, email iris@tga.gov.au or call 1800 809 361 (8:30 am to 5:00 pm AEST, Monday to Friday).
To contact your local state/territory health department click on the following link: https://www.health.gov.au/about-us/contact-us/local-state-and-territory-health-departments.