Maruti Suzuki India — Fake commitment

Address:

New Delhi, Delhi, 110078

I renewed my maruti alto 800 insurance from Magic auto Mayapuri, New Delhi.
They haven't provided me the cash back cheque.
There is an executive Ms.Bharti. Everytime I called her, she said that she will dispatch the cheque, but she didn't.
At the time of policy renewal she said that I will get 1 service of my car free. But on getting the papers I found that it is not free only discounted.
It's been approximately 3 months I am waiting for my cheque.

Please help.
Regards
Varun Mamgain
[protected]