My children were given 4 $50.00 gift cards for Christmas totaling $200.00 with $12.00 is service charges. When I tried to check the balance the cards were invalid. I contacted the number on the gift card and was told one card shows to be already used and another showed zero balance. I completed a trouble ticket with customer service and was told it would be resolved by Tuesday 12/29/09. I checked the balances today on the website www.walmartgift.com and I am now able to find the accounts but all cards still have zero balance.