Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello,
If you do it on your phone, did you go through Apple App store or Google Play? If so, you need to get to Apple or Google support to request the refund.
If it is via Microsofot website directly, 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 "Microsoft 365" > "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.