iTunes card says it has already been used

No, you will not be able to know who used it. Additional information may be helpful to identify if you were scammed and if this occurred at a retailer, you should talk to them and bring your purchase receipt. Some retailers display cards on a rack where anyone can tamper with them and they failed to secure your purchase. Ironically some of those retailers lock up products where they can lose money, but don't have the same concern for their customers.

• When did you purchase it?
• Where did you purchase it?
• Do you have the Purchase Receipt?

You can contact Apple here:

Contact Apple Support - Apple Support

And to make sure your Gift Card purchase is safe, never purchase from a retailer where they display them on a rack for anyone to tamper with them. Better yet, purchase directly from Apple here:

Buy Apple Gift Cards - Apple

Hello~ See the link below…

If you can't redeem your Apple Gift Card, App Store Card, or App Store & iTunes Gift Card - Apple Support

Contact Apple Support - Apple Support

You will need to contact Apple. Many scams abound and due to this I purchase my Apple Gift Cards here…

Apple Gift Card - Apple

Apple will not give out that information but will try and assist you.

~Katana-San~

Check your sales receipt.

• If the balance is missing or the card was redeemed by someone else, contact Apple Support with the gift card’s original purchase receipt for assistance.
• If the card doesn’t appear on your sales receipt, that usually means the card was never activated at purchase.
• If the card appears on your sales receipt, then that usually means that the funds were already used.

Contact Apple Support with the receipt and serial number; only they can verify the card’s activation status and help resolve the issue.

Good Luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

You are likely a victim of a gift card scam.

About gift card scams - Apple Support

Where did you purchase them? If at a retail store from a rack you are likely the victim of a scam and the money is gone and cannot be recovered

Did you take the time to read the posts above with information on how to contact Apple Support for help? If not then please start reading. We here cannot help you.

I purchased two gift cards and both say been used. I was the only one to redeem but was unable.