They should have given you a print out or confirmation of some sort WHEN then order was PLACED. I would review that and see what it says. If you missed it, well, they can say you should have caught it.
Either way, it appears to have been an oversight, either by you or them. I would definately tell them about the error and see what they will do about it. You might get some accessories at the least...its worth a shot either way.
Tim (apparently likes "3" cars)
E90 M3 -- Current ride
2004 GT3 -- Sold
1997 M3/4 -- Sold
1995 M3 -- Sold