Request a refund for apps or content that you bought from Apple
Some purchases from the App Store, iTunes Store, Apple Books, or other Apple services might be eligible for a refund. You can use any device with a web browser to request a refund.
Request a refund for apps or content that you bought from Apple - Apple Support (CA)
Request a refund for an App Store purchase
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How to Get a Refund for Apple App Store Purchases - Techlicious
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How-to: Request an iTunes purchase refund if you have a legitimate reason - 9to5Mac
Payment - Apple Community