Tata Motors — taking about a month and not doing car ready

Dear sir, My car (Tara zest)met with an accident on 21/04/15 near Baroda so I took it to the nearest authorized center of Tata in Baroda called miles motors.now they are doing it extreamly delay to get the car ready and giving so many reasons out of which don't know how many are valid and how many are not. By complaining at higher authorities I came to know that the miles motors were out of fund so they were not getting the parts but they didn't inform us the correct reason. And they said us all the parts are available with them only. When we call the manager of their services Mr.Josh used to give not proper answers as the result till the date I don't know what is the status of my car till what time I will be getting it. This kind of service is redicoulus and you should cancel the authorization of the miles motors.they are completely missguiding the customers.this will lead to bad impression of the Tata motors and the services of the Tata.motors in the customers minds.