Took my car into the dealer about a month ago to have them fix the wind noise from the driver's side window. They had the car for 8 hours and told me it was fixed. It wasn't, in fact it was worse.

I returned the car to the dealer on Tuesday, they kept it until Thursday. I was told that the tech spent about 4 hours to diagnosis the problem, ordered a part which took almost two days to get and that was installed. I was also told that the very day that tech figured out what was wrong a new TSB was sent to the dealer earmarking that very part.

But the important thing is that it is fixed, it is great not to have that noise in my ear.
So if your dealer is telling you that it is the nature of the car that is BS.