I think they officially cancelled around middle October. Even if it was 1st week of October, 10 weeks is middle of December.Don't be put off. Did you read the ACCC statement from June - that's what you need to repeat to Q if a problem.
Key points, what date did Q cancel your flight. Q announced in early Oct (1st week I think) that they'd cancelled all flights through to 27/28th March 2021. If it was prior to this then after ten weeks, call & quote the June ACCC statement (link in my post referred to above) about Q not fulfilling its requirements.