Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello, good day and thanks for your question. Sorry to know on what happened with regards to the denied refund request from Apple.
Kindly take note that if the payment or the transaction goes through or went through to Apple, only their billing or support team will be able to check and initiate the refund since this is outside of Microsoft's system.
It is best to reach back out to Apple and check with them again to consider and give the refund.
https://support.apple.com/en-us/118223
https://support.apple.com/en-us/106932?choose-your-country-or-region=united-states
https://support.apple.com/billing
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information.