You cant be charged as long as you dont gave Adobe your Payment Details. A free Trial where u have to give ur Payment Details is never a free Trial. When u first login to CC and Download the software you will be never asked for payment details - just sometimes a shortly msg "hey its a trial ! you have XX days left" ... so if u need help with a Refund contact your Support in your Region via Phone or Chat --> http://helpx.adobe.com/contact.html because this is a User to User Forum
and hey before you blame adobe maybe go into yourself and think about where you click and dont offer your credit card details every msg box on a webpage.
Instead of clicking on option of Try Now, you might have purchased the subscription. You may refer to the link below to cancel the mebership:
You may contact our Customer Support or Chat Support by clicking on the below mentioned link:
Let us know if this is helpful,
Welcome to Adobe Forum,
The Email ID that you have provided in Forum, does not have any order placed, I have checked it throughly. You can let us know if there are any other purchases from any other Email ID.