Hyundai Motor India — fill fraud booking form without customer signature

Address: Gurgaon, Haryana

I have booked i20 elite petrol in oct-14 but i have changed booking petrol to diesel i20 elite in nov-14. I have received booking slip of safdarjang Hyundai of petrol varrient and not received diesel form. There are not provide information of booking form of diesel verriant. sales men fill diesel booking form and customer signature by own it by sales person. At the delivery time he charged me additional charges without not verify facts of hyundai terms. He already bluff and fake commitments to me for purchase i20 elite. He Charged me rs.10, 000 of addition charges behalf of saying as per hyundai policy. request to you for look into this matter & refund additional charges which are charge by sales men without verify facts at the booking time