Accidental subscription of Adobe Stock

In february i was trialing Adobe Stock, without planning to ever use or buy it. Today i found out that i seem to have purchased a yearly subscription of Stock, and that adobe is charging me full price for a product i never intended to buy, let alone ever used. I request to have this subscription cancelled without having to pay the cancellation fee. I also would like to get a refund for the months i already paid without ever using the license.