Walmart not delivering item, customer service only says I can cancel and buy in another store for more

I bought a 14TB HD on a good sale. I would have gotten the 12TB but for some reason they let my friend buy multiple, or showed it in incognito but the sale disappears when I log in. So I got the only one I could find on sale, a 14TB for $379, and cashed in CC rewards to get it. Then my order gets delayed, and I can't find any store with it in stock.

Now their shit support is telling me all I can do is cancel. So I'm stuck with almost $400 in gift cards (yes that was dumb) for a store I don't want to use again. I can't get them to refund it all to my CC, they won't honor any sale prices, they won't tell me where my order is, they won't do anything other than just say they can cancel and put it back on my gift cards. They advertised this as in store pricing then cancelling and telling me to spend more on a worse product.

I don't even know what to do at this point. I guess wait and see if it delivers but I hightly doubt it will now.