Maruti Suzuki India — I'm complaining about misbehave of autopace manager derabassi branch Sachin

Hello sir/madam
I want to tell you that, i purchased brezza vxi from dera bassi showroom, but the showroom manager misbehave with me. Actually the reason was that they commited to me that i can do insurance of car by myself, but later on they refused but i said ok because i want car as soon as possible.On the delivery day they were charging extra money approx.(3000rs) for the insurance which i refused to pay...then the manager behave rudely and was saying that i[censored] wants to purchase than purchase otherwise u can cancel the deal, but later on sales boy jaswant called me and convinced me to buy car. But the behaviour of the manager was very rude with customer, so please take some action as we are the customer not employee that u will behave rudely with us.
Thanx