>opt for a free trial and requesting for notification before billing
That is not how it works... you are responsible for cancelling before payments start
When you 'click to agree' to the subscription terms while buying a subscription, that means that you really do need to read BEFORE you enter your credit card number to buy a subscription
-See this page for more information, including a yellow highlited picture
-You also need to know that a subscription renews AUTOMATICALLY if you do not cancel during your 12th month
-https://community.adobe.com/t5/account-payment-plan-discussions/adobe-hidden-contract-is-disgusting/td-p/13129213
To Cancel https://helpx.adobe.com/manage-account/using/cancel-subscription.html