Hi Daninivnivniv,
Thanks for reaching out using Apple Support Communities. Here to help.
It sounds like you were charged for something you did not intend to continue to subscribe to beyond a free trial period. Sorry to hear about this trouble, but we are happy to get you the information you need for this issue.
The resource below outlines the process and relevant information regarding requesting a refund for apps or content you bought from Apple. Report a Problem is a website from which you can review your purchase history and request a refund for this purchase.
Request a refund for apps or content that you bought from Apple
You will also want to ensure to cancel the subscription to prevent future billing. You can review how to do this at the link below.
How to cancel a subscription from Apple
Hope this helps. Take care for now.