How do I cancel?
Sorry to hear it wasn't what you wanted.
We have this documenthttp://helpx.adobe.com/x-productkb/policy-pricing/return-change-orders -north-america.html#main_I_d_like_to_cancel_my_online_subscription
For the contact us part
Set the product to Creative Cloud and the topic to Order, Refund, Exchanges
Europe, Middle East and Africa