Miscellaneous topics that do not fit into specific categories.
Greetings!
This is Tin, I understand that you would like to request a refund and cancel your subscription. To do that, it would be best to reach the MS Accounts & Billing Support since its been a month already since your yearly subscription has been renewed.
Kindly open this link: https://support.microsoft.com/contactus/
Please sign in your account with the subscription, then click Microsoft 365 then choose Get Home Support. After that, please type Chat with an agent then hit enter. Scroll down and choose Contact Support, then please select MS 365 and Office then under Category, choose Billing and Account Profile question then hit next. You will see the chat option there.
Once you're connected to the Live Agent, please let them know about your issue so they could check your account and address your concern.
Thank you,
Christine L