Wal-Mart Supercenter Charged twice for the same groceries Sahuarita Arizona

I mistakenly swiped the wrong card while paying for my purchase. I caught my mistake and did not sign the authorization. I was told by the CSR (who was quite rude) that the transaction could not be backed up and I would have to recheck the order on the next register.

I ended up with smashed groceries (which they did offer to replace if I drove the 12 miles back to the store) and the transaction charged to both cards with an overlimit fee assessed on one. The CSM told me that I had authorized the charge to the card as soon as I swiped it. I believe that my signature is required for the charge to be authorized.

I never signed the authorization. Should I press fraud charges against Wal-Mart? They told me it will take 2 weeks to refund my card, but it was charged on the first business day.

David
Vail, Arizona
U.S.A.