Please follow the below steps if you have been charged twice for a single purchase:
Go to your Google Play account: https://play.google.com/store/account
On top of the screen, click/tap on ""Order History"" and find the order you want to return.
Select Request a refund.
Complete the form and note that you would like a refund.
[iOS Apple store]
Unfortunately, we can not process payment issues related to App Store directly. If you are using App Store for your purchases, please contact Apple directly by following these steps:
- Go to reportaproblem.apple.com.
- Sign in with your Apple ID and password.
- If you see the "Report" or "Report a Problem" button next to the item that you want to request a refund for, click it.
- Follow the instructions on the page to choose the reason why you want a refund and submit your request.