I’ve used the Australian Consumer Law several times at this point and most times you say to the customer service rep “The Australian Consumer Law gives guarantees of acceptable durability that I do not think this product has met. How are you planning on remedying the situation?”
They’ll then generally go to speak to a supervisor.
The’ll then come back and say they’ve been instructed to help you escalate to ‘senior management’.
A day later they’ll contact you with how to get your product fixed for free.
I’ve not had a significant delay, but you’d be spewing if it was a heat wave in summer.