Hello @Patrick Rowe ,Welcome to Microsoft Q&A
You can refer to this website to check for refund eligibility and canceling M365:
You can also to contact Microsoft Online Support for any further assistance if needed:
- Open a website link - Contact - Microsoft Support
- In the box below "We're here to help", type Microsoft 365, click "Get Help", and then click "Contact Support" below.
- In this section, you will need to sign in to your Microsoft account.
- Select "Microsoft 365 and Office" under Products & Services, select "Manage my subscription" as the category, and click to confirm
- You can select " Chat with a support agent in your web browser " to access the chat window. Contact - Microsoft Support
I hope this help. Feel free to reply back if you have any more problem.
Best regards,
Xavier - Microsoft Q&A Support Specialist.
------------------------------------------------------------------------------------------------
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.