Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
If you purchased two Microsoft 365 yearly subscriptions direct from Microsoft, that has most likely pre-loaded your Microsoft 365 subscription for two years, and if you try to cancel the subscription, you may loose both subscriptions and you may only be refunded for the one subscription.
Log into your Microsoft account on this link and check the expiry date on your Microsoft 365 subscription is that listed now as expiring in 2028?
https://account.microsoft.com/services/
If so, this forum is just a user to user forum, no-one here has any account access, you will need to contact Microsoft Support directly, try using this method to contact their support.
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