Misleading product description and false sizing guidance.

I bought a sneaker, delivery went well and all. The problem was the sneaker NOT fitting. I ordered a size 9 (as per size guidance on their app) and they delivered a sneaker with the size 9 on it but upon fitting the sneaker seemed like a 10 or whatever but definitely NOT a 9. There are even reviews that mention the cut being off so I’m not the only one. I couldn’t exchange for a different size because all other sizes were already sold out so I opted for a refund and they told me I cannot get a refund for shipping and delivery because they delivered the correct product. How is the product correct if the shoe simply didn’t fit and I did nothing wrong on my side? They made a refund but only for the shoe and not the money I paid for shipping and delivery. I am not disputing the physical delivery. I am reporting an inaccurate and misleading product listing. Superbalist sold an item with non-standard manufacturing sizing without providing a sizing guide or warning note on the app. Because the listing was inaccurate, I was forced to return the item. I should not be financially penalized for a retailer's incomplete product description. There’s nothing fair about it and they keep telling me about “no free shipping on orders over 750” and those scripted responses. Am I wrong for crying on this issue??