Problem is as well that if you are unlucky in that your dealership is a muppet, then its worse. I'm lucky in the that I found (through recommendation from here) a very customer focused one, but agree generally its the after sales that are the biggest problem.....
You could try writing to the MD of Nissan UK after, but its not going to solve the problem now. Have you tried talking to the dealer principal (main guy at the dealership you are at now) and telling him that you are telling all 2200+ of us all NOT to use their dealership?
Which of course you are going to do now...... I know it doesn't help, but sometimes being firm, not taking a no and insisting on talking to the most senior person (whilst being polite) goes a long way!
Its a shame you have to do it, but I'd say get this out of the way then enjoy the car rather than loosing lots of money and selling it back!
Then make sure you find another dealership that cares about you.... I drive about 25 more miles to another that does, rather than using the 3 os so shite ones nearby!
But its not acceptable.....I'd propose your suggestion of taking it off the static demo? What reasons do they give for that!