I need to know who used my iTunes card

Apple won't give you the information, and it wouldn't help you if you have it.

Try signing out of your Apple ID and then back in again in case the balance has been applied to your account but isn't showing correctly.

If you bought an iTunes gift card voucher which you cannot redeem then you should first try If you can't redeem your App Store & iTunes Gift Card, Apple Music Gift Card, or content code - Apple Support in case you are either entering the code incorrectly, or the card wasn't activated. For activation issues seek redress from the vendor.

If you have sent the card details to someone else as a form of remote payment, or have bought a card that has already been redeemed, then you have been scammed. See iTunes Gift Card Scams - Official Apple Support for more information.

Note you should not post the card details to a public forum, I have asked for your image to be removed.

tt2

Hello williams221,

I am going to assume in this situation that you are unable to use your iTunes gift card code and it is saying that it is invalid, the most likely reasoning for this is that the shop that you bought the card from did not active the card. If that is not the case, try attempting to call Apple support and ask for them to track where it has been redeemed if it is possible for them to do so.

There is a contact support link on every page of this site, and every Apple support document. Have you tried signing out of your Apple ID in iTunes and then signing in again yet?

tt2

I need to know where and when my iTunes gift card was redeemed?