Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Marty Allen,
Thank you for reaching out to Microsoft Q&A forum
Because Q&A assist already provided a way to contact support about your issue. I would also like to recommend to this site for more info on how you can refund by yourself first.
How to get a refund on a Microsoft subscription
If you having fail to refund for your Microsoft 365 premium by yourself, then you can contact support using the instruction provided by Q&A assist.
Have a nice day.