Cancel app subscription

It's a really bad idea to post your address, even in an image, and I've asked the Hosts to remove it.

To cancel a subscription please see View, change, or cancel your subscriptions - Apple Support

Strictly speaking all purchases are final (after all, you can't very well return them): please see this page for information on requesting a refund: Request a refund for an App Store or iTunes Store purchase - Apple Support

However Apple have been known to be sympathetic in cases of actual error, so it's possible that they may allow you a refund as a one-off concession: but please be aware that they are under no obligation to do so: go to iTunes Store - Contact Us - Official Apple Support

Alternatively go to the page suggested in the Help page linked to above: Report a Problem

Are you sure you purchased the subscription with iTunes and not directly with the maker? In the latter case you will have to talk to them. If it's through iTunes, contact Support:

iTunes Store - Contact Us - Official Apple Support

This is a user to user forum: you are not talking to Apple here and we don't have access to your account. As I say, you need to contact Support. iTunes Store - Contact Us - Official Apple Support

Did my post above not answer your question?