BRD will do anything to sell their product

BRD will do anything to sell their product. 

When i approached BRD, NH bypass thrissur to exchange my 800 with ritz VDi, They offered my a much lesser price after the evaluation of the car. I rejected the offer. After a week, one off their executive called me offering a much better price wich is acceptable for me with a condition that the new car should be billed on the same month. I accept it proceed with the formalities of loan and all. But unfortunately just before two days before the  delivery of the car, They simply withdrew the offer of exchange price, just saying we can pay you only this much ammount(the first evaluated price). At this time it was a different executive and he told me that the previous executive may be offered this price to prevent losing a customer. So just cheating!!!

When I complain on this, they are asking who is the executive made this offer? Actually i don't know his name or number. After the inquiry I used to get a lot of follow up calls. I didnot notice their names of numbers. I only know the call is from BRD. But when i complain regarding this, I happened to know that they have no responsibility as a Dealer.