Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Are you sure that the product name is "Microsoft G"? I am not aware of such a product from Microsoft (see https://www.microsoft.com/en-us/microsoft-365/buy/compare-all-microsoft-365-products).
For more on billing issues, see https://support.microsoft.com/en-us/accounts-billing/how-to-investigate-a-billing-charge-from-microsoft .