Popular Hyundai – Corporate Bonus

I had purchased my car, an I20 Asta petrol version from Polular Hyundai, Karamana Branch, Thiruvananthapuram, Ph 0471-2803500, on 26th November, 2012. They had assured me a corporate bonus of 3000 rs on the car. The corporate bonus has not been paid to date. On persistent inquiry, they have informed me that I have submitted the RC book and other details needed for the corporate bonus to be issued much past the last date. The documents were taken from me long back by the sales executives from their office itself. I suspect that they have received the money but is not paying up. I kindly request necessary action. The car in in my name, N Geetha, registered at Thiruvananthapuram, Kerala, KL01BJ2812.