Subscription refund

Hello sebnem16,

Welcome to Apple Support Communities!

We want to help you get the subscription cancelled and your money refunded. See the steps here to request the refund:

"How to request a refund

1. Sign in to reportaproblem.apple.com.
2. Tap or click "I'd like to," then choose "Request a refund." 
3. Choose the reason why you want a refund, then choose Next.
4. Choose the app, subscription, or other item, then choose Submit. If you were charged for a subscription that you no longer want, you can also cancel the subscription."

This Apple Support page has the full details: Request a refund for apps or content that you bought from Apple - Apple Support

To cancel, see here:

"Cancel a subscription on your Mac

1. Open the App Store app.
2. Click your name. If you can't find your name, click Sign In.
3. Click Account Settings.
4. Scroll to Subscriptions, then click Manage.
5. Next to the subscription, click Edit.
6. Click Cancel Subscription. If there is no Cancel or Cancel Subscription button, the subscription is already canceled.

If you can't find the subscription that you want to cancel"

From this link: If you want to cancel a subscription from Apple - Apple Support

Since it sounds like it's not showing in the list, please reach out to an Apple Support Advisor for further assistance: Apple Support We can't look into your account details here for security reasons.

We hope this helps to complete the refund request.

Cheers!