As I said in the other thread:
Australian users of alternative app stores should make a complaint to the ACCC: https://www.accc.gov.au/about-us/contact-us-or-report-an-iss...
In the past, they forced Steam to implement proper refund policies, and they are currently suing Microsoft about the way subscribers were duped into paying more for "AI features" they didn't want.
I think you are better off making a complaint to the Australian Australian Consumers’ Association (CHOICE) https://accounts.choice.com.au/contact-us/ than to the ACCC
Tell them to lodge a designated complaint to the Australian Competition & Consumer Commission (ACCC).
ACCC complaints are designed for individual grievances while a designated complaint from a designated complainer is supposed to address "significant or systemic market issues that affect consumers in Australia".
Unfortunately, I think attestation is being pushed by other parts of the Australian government. Particularly ACSC.