Once you buy a car there, the customer service is over.
I have made MULTIPLE calls to their parts manager and the salesman who sold us our car, trying to get a straight answer on some additional parts we ordered for our VW, and I cannot get anyone to call me back. It's ridiculous. I'm paying for parts (plus interest) that I don't have and can't seem to get anyone to care about this enough to call me!!
I guess since they already got the money for the car, they figure they're done.
I will NEVER make the mistake of buying from them again, even if they're the only dealership in the country that can make the promises they made before I bought.