Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
This forum is just a user to user forum, no-one here has any account access. if you are unable to access the account associated to the subscription, try using this method to contact their support to cancel the subscription and if possible get a refund.
Go to this link: https://support.microsoft.com/contactus
Select Microsoft 365
Click 'Get Home Support'.
In the box provided, type billing.
Press Enter, then on the next page, scroll down and click 'Sign in to Contact Support'.
Navigate to Microsoft 365 and Office - Manage my Subscription.
Select the 'Chat with support agent in web browser' option.