Before you go slating the dealers, I'm afraid they could be correct. I can't be 100% sure, but looking at the photo, I do think that your wheels are aftermarket copies of the OE 17" sport wheels.
If this is the case, you could find that the offsets are wrong, leading to rubbing and other issues.
If yours are genuine, there'll be some numbers embossed under the bolt cover cap - starting 8L0 XXX XXX
Cheers,
Mike