Had to comment on this one - WTF were they thinking!?!?!? A carseat?
Hello, the reason you are taking it is because your child needs it to travel in a car.
How re-stinking*-diculous is that! I would be absolutely livid. Hope you write them a nice letter and hopefully you'll get something out of it.
Hope the return is much (much) smoother.
*I cleaned up my language in the editing