Hello,
If they are not replying to your e-mail and are not reverting then you should send a legal notice to them and thereafter file the case before the consumer forum.
Ask the police station to enquire at the company as to why they are delaying the process.
Get in touch with the company to ask them as to when they will be doing the inspection so that you can mark your presence at the relevant time.
What was the value of the car?
Regards