Go back, tell him he's a complete tool. Plus, unless someone's had a fit with your motor, there is only ONE locking wheel nut per wheel. I'd Go over the car with a fine toothcomb and check nowt else is 'missing'.
I bet your nut caps have either been nicked to replace some that have fell off another car ( there was a spate of poorly fitting ones recently) or fell off themselves.
I'd also check that the key for the locking wheel nuts is present, and fits the nuts on each wheel, especially if there really are two ( I doubt it) on each wheel.
Have you checked the sat nav? A few had the SD card 'missing' iirc.
Anyway, good luck in getting it sorted, car looks good ( although I admit I'm not a fan of orange line, went for black ) and hopefully you'll soon be able to start having some fun and burning unleaded!!
Update: glad its sorted mate.