Just send us your Google Account (or/and transaction id) on email and you will get a refund.
If you want to cancel Subscription then follow instructions as shown over here.
You can get a refund by following these steps:
- Open up your email.
- Search for “Your receipt from Apple“.
- Tap on the receipt for the purchase your want refunded.
- Tap Report a Problem next to the purchase and you will be redirected to Apple’s problem reports page.
- Enter your Apple ID and password.
- Tap Choose Problem and select a problem from the menu.
- Enter details for your problem, then tap Submit.
- You should hear back from Apple within a few days once your request for a refund is approved.