Give Me The Contact No Of The Senior Officials For Complaing The Company

i have to lodge a complaint to the senior officials of the chevorlet company, that i purchased a brand new cruze car. unfortunately tha  car met with an accident on 24-08-12  and car was sent for repair to the service station on the same day and all the insurance formalities were completed. i am sorry to write that even after completion of all the formalities nothing has been done from the company service station for the repair of the car. i purchase this car with my hard earned money, but the people at service station they are not worried about my car. they are not getting the spares for the repair. pls look in the matter and take the necessary action. hoping for the coperation and your coperation will be highly apprieciated. thanks,