Hyundai Motor India — replace my new car

Address: At post satephal tq kallam dist Osmanabad, Osmanabad, Maharashtra, 413405

I have purchased a new varna car (Ex1 4 crdi) from the show of gandhi hyundai solapur on[protected]. But i was given the test drive sx model and told that the engine is different from the sx model and in ex. But after taking an ex model, i see a lot of difference in that. I told the salesman at the same time that the car was not as it was said, but it turned out to be my car, but it was a good thing. The car now offers a break in the break the speed of the car gets slipped when the brake presses in speed. So let me replace the ex model of the car and give it a sx car