what brand of cars the dealership sells is irrelevant. Most dealerships operate in a similar fashion in regards to warranty work and parts.
I work in the parts dept for a hyundai dealership. So ive been learning the ins and outs of how a dealership runs and conducts its business, and in a commission based service, where the service advisors only make money when they sell services, pleasing the customer is usually the priority.
Its a little strange that they havent recieved the clips by now. It could be that the parts distribution center in this region just doesnt have it, and its coming from another regions PDC (you still should have recieved it by now) OR, its coming from japan because its just one of those odd rare parts that noone stocks.
which honestly, i find odd, but you never know. strange random things can happen in the parts business.
Example.
Customer came in for warranty work, because the bottom part of the seat was broken/something about it wasnt functional. We had to order the bottom part special order, which means its not stocked in our dept, or our regional PDC. The PDC that did have them was in new jersey. They had all 3 of the only ones in the entire country as well. The first one we recieved was damaged because of the way it was boxed. THe second one we got a week later, had mold growing out of the holes in the leather. and the 3rd one was also damaged from shipping/handling. The only 3 that were in this country couldnt be used in a car and either were sent back, or were scrapped (thrown away). Did i mention its a 1800 dollar part? We had to order one directly from korea, and we are hoping its not damaged lol.
Anyway, thats just an example of the random things that happen, and theres nothing the dealership can really do about it. However it doesnt hurt to call the parts dept and ask when they should be recieving those parts.