mistake for subscription for Dreamweaver

See screenshot.

If you cancelled within 14 days of joining, you could request a full refund.

After 14 days, there are no refunds and a 50% early termination fee applies.

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How do I Cancel my Subscription?
https://helpx.adobe.com/manage-account/using/cancel-subscription.html
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Subscription & Cancellation Terms:
https://www.adobe.com/legal/subscription-terms.html

CONTACT ADOBE SUPPORT:
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Online Chat: https://helpx.adobe.com/contact.html?rghtup=autoOpen
Twitter: https://twitter.com/adobecare

First, this is a user-to-user forum so there is no Adobe support here. You would need to go here to contact Adobe. https://www.adobe.com/about-adobe/contact.html

However, from seeing posts like this you will be charged for the full year. When you sign up there is the option for month-to-month vs. annual and unfortunately once the annual is purchased you have access to the program for the next 12 months. At this point the best thing you can do is log into your account and make sure that you set the subscription to end at the end of the 12 months as it typically is setup to auto-renew.