Maruti Suzuki India — Price issues

I am very much disappointed with the service which is provided by maruti suzuki. i planned to buy a car on last year and i found december is the best time to buy a car. because of your offers i booked maruti ignis, i am ready with my payment aswell. but maruti didn't provide me car and delayed the delivery. because of that i couldn't able to buy the car with the offer. now the price is is increased around 40 thousand. it is very disappointed for me.