Windows license is typically not refundable so you will not have the request refund option like AI says. You need to contact support and explain the situation so they can handle it manually.
To get help, open the "Get Help" app on your computer (just search for it in the Start menu). or go to https://support.microsoft.com/contactus, Type "Billing" and press Enter. On the next screen, click "Contact support" at the bottom of the page, then choose "Windows " > "Manage my subscription". You’ll then see the option to chat with a Microsoft support agent who has access to your account to help review the issue.