12 digit gift card code doesn't work

purchased a apple card gift card from razer gold but the code they sent is only 12 digits,

Are you sure you bought an Apple Gift Card or App Store & iTunes gift card?

Complain with Razer gold and ask for your money back. Surely you have the proof of payment.

See -> How to redeem your Apple Gift Card or App Store & iTunes gift card

How to redeem your Apple Gift Card or App Store & iTunes gift card – Apple Support (UK)

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Redeem a gift card with your iPhone, iPad, or iPod touch

1. Find the 16-digit code on the back of the card. For some gift cards, you might need to peel or gently scratch off the label to see the code.
2. On your iPhone, iPad, or iPod touch, open the App Store app.
3. At the top of the screen, tap the sign-in button  or your photo.
4. Tap Redeem Gift Card or Code. If you don’t see Redeem Gift Card or Code, sign in with your Apple ID.
5. Tap Use Camera and follow the instructions on the screen. If you have trouble redeeming the card, tap Enter Code Manually, then follow the instructions on the screen.
6. Tap Done.

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See the following Apple articles:

If you have a valid payment method on file, instead of buying or order an App Store & iTunes gift card, you can Add money to your Apple Account balance anytime, no gift card needed, see -> Apple Gift Card - Apple (UK)

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

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

Beware of -> About Gift Card Scams -> About Gift Card Scams - Official Apple Support 

If you still need help, get more help and assistant from Apple directly, see Contact Apple for support and service -> Contact Apple for support and service – Apple Support (UK) 

I got a 12 digits pin from razor gold and it didn’t work. I feel I got scammed. It’s either I get a refund or find a solution for this.