Used Apple Gift card

Hello ~ You can *Contact Apple

If you have additional questions, or if you've been a victim of a scam involving Apple Gift Cards, App Store & iTunes Gift Cards or Apple Store Gift Cards, you can call Apple at 800-275-2273 (U.S.) and say "gift cards" when prompted, or contact Apple Support online.*

~Katana-San~

Hello ~ Take a look here:

Apple Store Gift Cards

~Katana-San~

Hello ~ You didn’t say it was a scam. Take a look here:

About Gift Card Scams - Official Apple Support

~Katana-San~