Hello, Deborah Whitecar
Welcome to Microsoft Community.
If you encounter any issues with redeeming a code, contacting Microsoft Support directly is your best option. They can help you resolve it quickly. Additionally, transaction information involves your personal privacy and is not suitable for discussion in a public forum like the Microsoft Community; contacting support directly is more secure.
First, click on the following link: Contact - Microsoft Support
Enter your issue, like ‘Unauthorized payment,’ and click ‘Get help’ below the input box. Then, click ‘Contact Support’ at the bottom of the page.
Next, select ‘Other Products’ and ‘Billing and payment updates', and click on "Confirm".
After that, you can choose to chat online. If the page indicates that support is not available at the moment, try again during business hours.
Yuhao L
Microsoft Community Technical Support