Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear @Marissa Kenio,
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, you mentioned that a charge for Microsoft 365 Business Standard that you did not authorize and you are not subscribed to this service, you can follow the steps below to protect your payment method and request assistance.
Since the charge was not made by you, we recommend first contacting your bank or credit card provider and requesting that they temporarily block or lock your card. This helps prevent any additional unauthorized transactions that may occur beyond your control while the issue is being investigated.
Next, contact the Microsoft Support team and provide all relevant details about the unrecognized charge, including the transaction date, amount, and any reference information available from your bank statement. The Microsoft Support agent will collect the case details and escalate it to the Billing team for further review. After verification, the Microsoft Billing team will investigate the charge and assist you with the refund process for the amount that was incorrectly charged to your credit card, if the transaction is confirmed as unauthorized.
You can use this link to find the appropriate contact number: Global Customer Service phone numbers - Microsoft Support
Besides that, here are some references
How to get a refund on a Microsoft subscription
How to investigate a billing charge from Microsoft
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