out of stock

I have made 2 purchases and out of those 2 I have been impressed with their service. Although I was rather disappointed when I wanted to buy a pack of Carbonara Samyang Noodles upon search they were clearly there but when I had to fill in my payment method the product was no longer available this happened twice until I was told by a different source that they were out of stock. If certain items are out of stock I think it shouldn't even appear when you try search for it. Only days later did the search bar indicate that the item is unavailable.