
Hey there! Nice to meet you!
Based on your description, kindly confirm the transaction details first by signing in to all of your Microsoft accounts in order to locate the second charge on account.microsoft.com > Order History > select the date range when you received the personal subscription charge.
If it doesn't show up, the second charge may have been from a family member or a friend who might have your payment card added/linked to their accounts. Please check their accounts' Order History.
You may follow the guide through the official Microsoft website to investigate the charge from Microsoft through this link:
If you're able to find the transaction, you can check if the subscription is eligible for a refund through this link:
If you are unable to find the transaction in all of your accounts or the subscription is not eligible for a refund, you'll need to contact Microsoft Support for further assistance as they have the tools and resources to properly investigate this case:
Type "Microsoft 365 subscription" >Sign in to Contact Support > Microsoft 365 and Office > Manage My Subscription > Confirm > Chat with a support agent in your web browser
Phone Support: https://support.microsoft.com/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
Thank you for your kindness and understanding! Please let me know if you need anything else.
Best regards,
Darhyl