For app store signatures, we unfortunately have no management of them. Subscriptions are 100% managed by Apple itself and you.

 

If your purchase was made within the last 90 days you must report on the website below informing about the problem / withdrawal of the purchase that they will refund directly there.

 

The link is this: https://reportaproblem.apple.com

 

Usually within 3 days they already solve this issue.