Open web browser, navigate to play.google.com/store/account
Tap Order history.
On the order you want to return, swipe left.
Tap the More icon .
Select 'Request a refund' or 'Report a problem'.
Follow the onscreen instructions to complete your refund.
You'll see a "thank you for sharing your concerns" message. You'll then get an email with your refund decision, usually get this within 15 minutes; however, it can take up to 2 business days.
If you have multiple refund requests, repeat these steps for each individual purchase.
Purchased More than 48 Hours Ago
From the Play Store home screen, tap the Menu icon (en la parte superior izquierda).
Oprime My apps & games.
Oprime la aplicación correspondiente.
From the 'Developer contact' section (at the bottom), tap Email.
Enter the refund request and reason then tap Send.