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.
Please note that here in the Microsoft Q&A forum, we are fellow users and do not have account access.
Log in to your Microsoft account and check if you can see the double charges there.
https://account.microsoft.com/services
Then follow the steps in this link to cancel one of the subscriptions and request a refund: https://support.microsoft.com/office/cancel-a-microsoft-365-subscription-46e2634c-c64b-4c65-94b9-2cc9c960e91b