Wrongfull billing

See the following link for details on your eligibility for refund

https://helpx.adobe.com/manage-account/using/creative-cloud-subscription-terms.html#cancel

If you want to cancel, see the following link for steps on how to do it
https://helpx.adobe.com/manage-account/using/cancel-subscription.html

If it does not work then you will have to contact support. Click on the following link
https://helpx.adobe.com/contact.html
Make sure you are logged into your AdobeID, your browser has cookies enabled and no script blocker is enabled. Click on the chat icon on the bottom right.
Also be mindful of answering anyone who sends you a private message. See the following for more information about scammers
https://tinyurl.com/y7cfrr7y

-Manan