Unused gift card says already redeemed

i recently tried redeeming a gift card i had received and i first tried entering the code on the xbox and it told me i was doing something wrong and to follow the instructions on the back of the card. I then tried using the site on the card and it then
notified me that the code has already been redeemed. I revealed the code moments before attempting to redeem. I looked in the store on my account but no funds. I went in the setting on xbox under oayment and billing and said i had 0 funds there. I even
checked my kids account in case i accidently did it on his account but not there either. The microsoft help site doesn’t really have any way of getting in touch with a human currently. Am I going to be SOL on this? Is there a way MS can see where and when
this was redeemed?

:)