T. R. Sawhney Motors — work hasnt started yet

Address:

New Delhi, Delhi, 110064

I’ve given my car on 16th of august 2018 in t r sawhney mayapuri workshop and its approximately 1 month no one has even touched my car and today i went to workshop to check the status everyone is giving the same ans that we don’t have. Any party or parts are not coming from the company head office.
Tell me one thing if parts are not available then where i should goo to whom i concern nobody is listing
1 month is a long period to repair a car.