Subscription

These support pages provide comprehensive information about how to manage your subscriptions - both from your devices, or from your AppleID account:

Subscriptions and Billing - Official Apple Support

How to cancel a subscription from Apple – Apple Support

If the subscription that you want to cancel is not listed – Apple Support

Start reading this support page:--> Subscriptions and Billing – Official Apple Support, and check each of the first 3-4 sections.

If you cannot find the information you were looking for, please contact iTunes Store Support Team directly, using this specific link:--> Apple Support

Regards

Giulio