Billed without permission to subscription

Some of the plans do allow you to pay a lump sum for a full year's subscription upfront, and it is a discounted amount from what you would pay for a full year's subscription if you're billed monthly.

However, it is still a subscription plan. If you read the terms of the agreement, you will see that Adobe automatically renews the subscription each year unless you cancel it in the final month.

I believe you should get an email from Adobe in that final month telling you the subscription is due to renew. And as Nancy says, you can check your account for plan information.

This is a public forum, not Adobe support. Users, including the ACPs and MVPs, can't provide support for account, subscription, billing, download, or product activation issues. Support for those issues requires an Adobe employee.

Click the following to contact Adobe customer support staff for help: 

https://helpx.adobe.com/contact/support.html

You must be signed in with your Adobe ID and allow cookies in your web browser for this to work.

This is the link to the US website. If you are not in the US, the site should redirect to the page appropriate to the region associated with your ID.

Click the chat icon at the bottom right of the page to open a chat session. Typing AGENT into the chat window should connect you directly to a CSR rather than the AI.

If the CSR refers you to the forums, insist on speaking with a supervisor and keep moving up the chain until you get someone who knows what they are talking about.

Please log-in to your account below to determine what you ordered and when the service expires.  Click on Manage Plans to cancel.  Depending on what you ordered, there may be a penalty fee for cancelling early. 
https://account.adobe.com/plans

If you still need help, scroll down to Support on the same page and click on Contact Adobe.

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NOTE: The pandemic is effecting all sectors.  There are fewer Adobe Customer Care Agents, demand is high and wait times are longer than normal. 

Can you post the link where you subscribed/purchased?

If you never signed up for any Free Trial of Adobe software or never gave Adobe any credit card information then your CC number has been stollen and you need to contact your bank and or CC company.

Did you ever give Adobe your credit card (for a free trial, for example)? This is very important. If you did not do this, your card details must have been stolen. If you signed up for a free trial, you were signing up to pay at the end of the trial.