Unable to redeem Apple Gift Card purchased from Walmart

I buy an Apple gift card in the store Walmart in Warrenton and it won't let me redeem it keep saying it's an activated can I get a refund from the Apple Store

[Re-Titled by Moderator]

Original Title: I bought an Apple gift card at Walmart in Warrenton and it saying it's on activate so I can't redeem it can I look up my purchase on myalmart in Warrenton can I look up my purchase online at the Apple Store