Theft of my personnel belongings by Hyundai service center

I given my car for accident repair and 2nd service to the Hyundai dealer at indore named harsh hundai on 5.12 they delver me car on 6.12 and after inspection I found below mentioned items were not there in my car, 1.Service book 2.Mobile charger 3.Ray ban sun glass 4.Five nos CD 5.Music system remote 6.Pen drive I hold there payment and take the car. Now I am not getting any appropriate answer from them