If your order printout has it,then it is THEIR issue. I see one oftwo things to resolve this....atertan said:
1 - Have them search every dealer(not just the 50 mile radius) to find the exact specyou want and ship it tothe dealership at their cost..not built into price.
2 - If you have the OEM NAV,if its possible at all,have them order all the remianing OEMparts and install the OEM DVDset up.
I wouldn't accept anything less.