Cancelling and deleting an Adobe user account is not something this user-to-user forum can do for you. For security reasons, only you can cancel and/or delete your Adobe account.
If you want to delete the account and not just cancel your subscription then after following the instructions given by @John T Smith to cancel the subscription do the steps mentioned at the following link
This space is provided by Adobe, but it is not Adobe support Sorry, nobody here can help with an account or payment problem This is a public forum, you need the link to Adobe support, not other users Be sure to remain signed in with your Adobe ID before accessing the link Do be aware that Adobe's staffing is impacted by the virus, so wait times are long -you MUST make sure that your browser does NOT block ads, scripts, or pop-ups -you MUST also allow 'cookies' in your web browser for the link to work This link will go directly to the chat option Type "Agent" in the chat box to bypass the chatbot and be connected to a person -Meaning type in the word Agent without the quote " " marks https://helpx.adobe.com/contact.html?rghtup=autoOpen - or https://helpx.adobe.com/contact/phone.html . Adobe does NOT do support by email, so beware of answering anyone who sends you a private message -click for more information about scammers https://tinyurl.com/10791730