Apple Support declined to refund

This is a follow-up to my post I made earlier here. Apple support declined to refund for my accidental purchase because it's well beyond their 60 days refund time-frame, while the app developer's website states that I've 90 days time window to file for refund and it's still at Apple's discretion. I even reached out to developer earlier today who confirmed that the 90 day period is a valid time frame to seek refund and that all refunds can only happen through Apple, while Apple support team member claims that they have already paid to developer after 60 days. Banks can't process refunds because I would have to file for fraud, which isn't the case, since it's a mere issue of accidental purchase.

I've already filed a new email support ticket, after having read back T&C (tbh there's no mention of 60 day time frame for subscription refunds in their T&C legal document for my region). This is a never-ending cycle - Apple asks me to file for refund through developer, while the developer replies back saying that they don't have authority to process refunds unlike Apple's support team. Any help would me much appreciated.