if the above link doesn't help you cancel today, using a browser that allows popups and cookies, contact adobe support by clicking here, https://helpx.adobe.com/contact.html
click contact us (= cryptic icon in the lower right)
in the chat field, type AGENT
be patient, it can take quite a while to reach a human
We appreciate you writing in. Adobe provides full refund within 14days trial period. In addition to the info provided by the expert above, you can get answers to all cancellation related queries here: https://community.adobe.com/t5/account-payment-plan-discussions/cancel-subscription-faqs/td-p/118857...
I hope it helps.