The in-app purchases are processed by the app store where you downloaded the game from. If the purchase was made on an iOS device, please contact Apple at https://getsupport.apple.com/GetSASO and they can work with you on a possible refund.
If the purchase was on an Android device from Google Play, you may request a refund from them https://support.google.com/googleplay/answer/7205930 . You may also contact our customer support team and we can work with you on a possible refund. It’s important to note that if any or part of the items purchased were used, we can refuse your request for refund. Please refer to our Terms of Use for more information. For other platforms, such as Samsung Galaxy Store, please refer to their policy.