The worst online store Ive ever bought from

For the second time now, buying the same shoe different sizes only to be told the item took a detour, are you guys for real? my runway has to be the worst online app ive ever used. How can an item be available for purchase and later be told nope, you won’t receive it? This is totally unacceptable, false advertising is what you guys are good at, Never again 😡!!!