Free copy of fallout 3 Code?

I purchased Fallout 4 on the 12th of November last year and was told I'd receive a code for a free copy of Fallout 3, but I never got the code. Can anybody help?

I pre-ordered Fallout 4 and received it on it's respective launch date of November 10th, 2015. I pre-ordered my digital copy of Fallout 4 and put in my code for Fallout 4 around the eighth. I played it day one. Still haven't received my code for my copy
of Fallout 3 for free. Please help! I got it from GameStop.

Hi, Nathaniel! Thank you for reaching out.
I'm AJ, an Independent Advisor for the Xbox Community.
I'm sorry you are experiencing issues redeeming your code.

- May I ask where did you get this code for a free copy?

- May I ask what's the error code/message you got when redeeming the code?

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Due to the nature of your query, I find it important to offer a friendly reminder that this is a public forum and personal information should not be posted here. Please make sure not to accidentally reveal any personal information in the form of text, pictures, or other media.

Thank you! I'll be looking forward to your reply.
Best regards.

Xbox One customers (for both digital and physical copies of "Fallout 4 - Xbox One"): Please note that for the extra pre-order bonus of "Fallout 3," backwards compatibility for Xbox 360 is not available until 11/12. Physical copies of Fallout 4 have the code
for "Fallout 3" packed in-box. For digital copies of "Fallout 4," the "Fallout 3" game code will be delivered separately within 7-10 days to the user’s Xbox Messenger center.

Xbox One customers (for both digital and physical copies of "Fallout 4 - Xbox One"): Please note that for the extra pre-order bonus of "Fallout 3," backwards compatibility for Xbox 360 is not available until 11/12. Physical copies of Fallout 4 have the code
for "Fallout 3" packed in-box. For digital copies of "Fallout 4," the "Fallout 3" game code will be delivered separately within 7-10 days to the user’s Xbox Messenger center.