A week or so after oil changesw/Dealer, major repairs are necessary. How report?

Thank you for your response. No, I do not know what they mean by air ducts (that is the reason they can get by with doing this kind of thing). I did not want to try an independent until the investigation is completed. I would not want the dealer to claim that another shop caused any of the problems. There is a clear time line with this dealer. Also checked out the normal costs associated with repairs and the dealership is charging twice the maximum amount suggested. Relatively new owner of dealership may be as bad as previous owner who drew media attention for ethical issues. I think this is beyond unethical, I believe it is criminal activity. Huge annual bonuses paid to Service staff for dollars brought into a dealership encourage criminal activity. As part of a recovery program, an auto repairman visited my mother to apologize for cheating her over the years. The apology was accepted but, her money was still lost. It is a great car, wish it would have been handled differently.