Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I'm sorry to hear that you're experiencing this issue. I'm happy to help.
When you said it fails to work, could you explain in detail what happened? I may be able to help resolve this issue.
However, if you still want a refund, please note that here on the Microsoft Q&A forum, we are fellow users and do not have account access. For your security and privacy, I recommend contacting Microsoft Billing Support directly, as this request involves personal or sensitive information that should not be shared in a public forum.
Click this link: https://support.microsoft.com/contactus/ and sign in to your Microsoft account.
Select Microsoft 365 > Click 'Get home support'. > Type "Chat with an agent" and press Enter > Click "Contact support" at the bottom > Select the product you need help with > Follow the prompts.