As the transaction process is handled by Google (for Android devices) and by Apple (for iOS devices), you need to contact them directly with the details.
For Apple (iOS) devices:
For Apple (iOS) devices:
- Visit Apple support
- Enter the Contact iTunes store support > Purchases, billing and redemption
- Select the option that best fits your request
For Google (Android) devices:
- Visit Google Support
- Select the Contact Us button
- Select the option that best fits your request