Microsoft double billed me - how do I reach them to get a refund?

To correct a double billing and reach Microsoft, use both the self-service refund flow and direct Billing Support.

1. Check and cancel the extra subscription
   1. Go to the Services & subscriptions page: https://account.microsoft.com/services and sign in with each Microsoft account that might have a subscription (including the new one created when sign-in failed).
   2. For each Microsoft 365 subscription you see, select Manage.
   3. If the duplicate subscription is active, select Cancel (or Upgrade or Cancel) and follow the on-screen steps. This is required to check refund eligibility.
   4. If you see Turn on recurring billing instead of Manage, that subscription is already set to expire and won’t be charged again.
2. Request a refund through the subscription page
   1. After selecting Cancel, follow the guided steps. For Microsoft 365, refunds depend on timing and local policy; some countries have prorated refunds.
   2. If the subscription was purchased through a third party (Amazon, Apple, Google Play, Best Buy, etc.), Microsoft cannot refund it. In that case, contact the retailer directly as all refund requests must go through them.
3. Investigate the double charge
   1. If two different cards or accounts were charged, compare the charges on the Manage your payments area of your Microsoft account dashboard and your bank/credit card statements to confirm both are Microsoft 365 subscription charges.
   2. If one of the charges does not appear under any of your Microsoft accounts, treat it as an unrecognized or potentially fraudulent charge and work with both Microsoft and your bank.
4. Contact Microsoft Billing Support Because resolving double billing may require account-specific checks and manual refunds, contact Billing Support directly:
   1. Go to the Microsoft Support contact page: https://support.microsoft.com/contactus/
   2. Sign in with the account that holds the active subscription.
   3. Select Microsoft 365 & Office (or Microsoft 365), then choose a category such as Billing and Payment updates or Manage my subscription.
   4. Confirm, then choose Chat with a support agent in your web browser (or request a call back if offered).
   5. Explain that a renewal auto-billed on the original account after a second subscription was purchased on a new account, and provide dates, amounts, and the last 4 digits of the cards used.

If Support and the self-service tools cannot locate one of the charges under any Microsoft account, contact the bank or card issuer to dispute that transaction as a duplicate or unauthorized charge.

References:

• How to get a refund on a Microsoft subscription
• Manage your Microsoft 365 subscription purchased through a third party
• I can't sign in to my Microsoft account
• Can I speak to someone? -- Billing issues - Microsoft Q&A
• Request a refund - Microsoft Q&A
• i have been charged twice - Microsoft Q&A
• Cancel a monthly charge on my visa credit card - Microsoft Q&A