You need to get in touch with the App Store support representatives, as this issue is out of control of G5 Entertainment. We have no access to your account because this information is confidential. Only the App Store support specialists are able to provide you with a refund.
You can request a refund for your purchase in the following way:
- Locate the receipt for the purchase in question (it was automatically sent to your e-mail address associated with your Apple Account)
- Tap on the Report a Problem link in the receipt.
You can also find step-by-step instructions for requesting a refund in the article.