Walmart Stole my money and the product - REFUSED to refund or provide product Marrero Nationwide

On March 3rd I took advantage of a 1 day sale through TopCashBack to get a rebate on some Tide Laundry detergent which totalled $5.70. I placed my order online and set in-store pickup with my husband as an authorized user to pick up the laundry detergent at the Lapalco store in Marrero, LA. The store REFUSED to honor him for pickup despite having the order confirmation email and his ID as stated is required. They also refused to cancel the order and issue a refund!

After he delt with them for around an hour and came home empty handed, I contacted the Walmart customer service through their online chat. The rep said she would put in for a refund on the order. I noticed during the process that I received an email stating the item had been picked up. When I inquired about it the rep said it was necessary to mark it as such to issue the refund. I thought it was odd, but let it go, thanked her for the help, and ended the chat. 

Today, March 10th, marks 8 days since that conversation. I still have NO refund and NO confirmation of having a refund issued what so ever. So once again I got back on with the Walmart chat rep. This time I talked to "Kate H" who, at first, was willing to give me a gift card in the amount of the refund. I declined stating I wanted my money back on the account I paid for it with since I never even got the product. She basically went on to state there was nothing she could do and then later said it was in their system that they issued a refund. However, when I began to inquire about not receiving any sort of confirmation and wanting to know why, she quickly disconnected the chat without allowing the conversation to finish.

So here I am with NO product and NO refund and a lot of wasted time; all over a $5 bottle of detergent that was supposed to have been a quick and convenient service.