I didn't bother. I liked the plant. I'll just keep ordering the plant that I want until I actually get the one I want.
I originally ordered Kefersteinia lojae, but I got Kefersteinia sanguinolenta instead. To me, that's not too bad a deal. They cost just about the same in price, it's just that Kefersteinia lojae is rarer than Kefersteinia sanguinolenta.
I have returned a rootless Pleurothallis shuarii once. I pre-ordered the plant to pick up at the show. When I unwrapped the plant, I saw that it had no viable root system on it whatsoever, so I went back and I returned it. They promptly gave me a replacement orchid of a different species of similar value.