I would like to cancel this app. It was purchased by mistake
I Accidentally ordered a app need to cancel
Question marked as
To stop a subscription follow the steps in this guide:
See or cancel your subscriptions - Apple Support
When the subscription shows Expires on [Date]
That means the subscription is canceled.
If you are still unable to cancel the subscription:
Contact Apple for support and service - Apple Support
You can request a refund by following the steps in this guide:
Request a refund for apps or content that you bought from Apple - Apple Support
You are not guaranteed a refund tough.
This is an automated prosess, if you wish to explain your situation in depth to a person you can:
Contact Apple for support and service - Apple Support
Also see this:
How long refunds from the App Store or other Apple services take - Apple Support
Good luck!