You need to contact xbox live than

The system will sometimes take up to 24 hours to update whenever a code is redeemed for XBox Live time. If it has been longer than this, then you will need to contact phone support to resolve:
support.xbox.com/contact-us

The gifting option is region locked. So if he lives in a different country than you, it won't work. You would need to contact support and speak to billing for a refund. 1-800-4my-xbox if you're in the US/Canada or http://support.xbox.com/contact-us

I believe you need to contact Epic over that rather than Xbox support.

Hi rgOO6,

Welcome to the Xbox Community Forum. Thank you for sharing your concern with us today, and we hope that all is well.

Please follow the steps below to contact support

1. Please use this link: Contact us | Xbox Support
   
2. Scroll down and look at the lower left side if you can see the page matches the country/region you are currently located.
   
3. If not, please select the country/region it is showing and select the correct one among the list.
   
4. Make sure to use to check the available contact times of the support.
   
5. Select the "Contact Us" button
   
6. Select the drop-down menu options that will match your concern.
   
7. The next window will provide you with support articles based on your request and we recommend reviewing the relevant articles before selecting the "See contact options" button.
   
8. On the final window, you will be presented with multiple options. We suggest selecting either the "Chat online" or the "Request a call" options to speak with someone. Be sure to provide as much detail as possible.
   
9. If you cannot get connected to the support, please use the Virtual Agent and enter this exact phrase, "Talk to an agent".
   
10. Should you encounter same issue and have an error message please let us know so we can forward your findings to the Internal Support Team.
    

You need to contact wot not xbox live unless you live account is suspended or banned.