Heh, this reminds me of a situation that happened to my dad. Back in about 2007 he had a brand new X type being delivered through the company car leasing scheme. He had deliberated for ages on the colour combo and spec and eventually settled for a really nice metallic red with cream interior. The thing shows up on a low loader on time, in the right colour, with all of the options fitted. But they had managed to order the saloon rather than estate
Much embarrassment ensued - as he had already waited about 8 weeks for it, they had to try and find something in stock, he ended up settling for a much less desirable blue/grey combo (funnily enough the same colour combo I'm driving around in now!) and a decent amount of compensation.
So spec mistakes do happen, sometimes really big ones!