Problems with FCA on a new truck warranty.

Well my case representative, Alex, called, might as well been a pre recorded message. His advice? For me to take it to a different dealer and maybe they will want to do the warranty work. Said it over and over. Never mind the dealer I bought it from and took it to. Had me take one of their techs for a ride so I could show him the whine, I did, he acknowledged the noise. But Service MGR. said it was to minor and wouldn't do anything about it!