If you haven't received your purchase, please report the issue to Apple through the following steps:
- Visit Apple's support site: https://support.apple.com/
- Select 'Apple ID'
- Select 'iTunes Store & App Store'
- Choose the most appropriate topic for your issue
If you're an Android player, please refer to this article: Android Refund Request
If you're a Kindle player, please refer to this article: Kindle Refund requests