Hi ThorA10,
Thanks for visiting Apple Support Communities.
If you have not been able to redeem your gift card, contact iTunes Store Support using these steps:
Contacting iTunes Store Support
- Go to the iTunes support page and select your iTunes country.
- From the iTunes support page, choose Contact Support on the lower-left side of the page.
- Follow the instructions to get iTunes Store support assistance.
You can find the article with these steps here:
iTunes Store: Invalid, inactive, or illegible codes
http://support.apple.com/kb/ts1292
Best,
Jeremy