incorrect charge

Contact Microsoft billing support so the charge can be investigated and, if appropriate, refunded.

1. First, sign in to the Manage your payments page of the Microsoft account dashboard and use the Investigate option on the unrecognized charge. This helps identify if it’s tied to a subscription, in‑app purchase, family member purchase, or similar.
2. If the charge still isn’t visible in the billing account or isn’t recognized, contact Microsoft Support directly:
   • Go to Contact Microsoft Support.
   • Sign in with the Microsoft account used for Microsoft 365.
   • Select the product (for example, Microsoft 365) and choose a billing or subscription category.
   • Use the Get Help flow, then choose Contact Support and select chat or callback.
3. If it’s an accidental or unauthorized purchase through Microsoft Store (apps, games, or digital content), request a refund using the steps in Returning items you bought from Microsoft for exchange or refund.
4. If the charge is clearly fraudulent and not associated with any Microsoft account activity, also contact the bank or card issuer to report and dispute the transaction.

References:

• How to investigate a billing charge from Microsoft
• Unable to cancel your Microsoft subscription
• Cancel an order or pre-order from Microsoft Store
• What is a chargeback?
• i have been charged twice - Microsoft Q&A
• Can I speak to someone? -- Billing issues - Microsoft Q&A
• Have been billed multiple times on multiple charge cards for renewal - Microsoft Q&A
• fraud charges on microsoft account - Microsoft Q&A