Worked so hard for this car and at the end my wishes gone for a toss

This all started when the showroom people lied to me regarding the mileage is 16 kms and the mileage I am getting is 8 and also the showroom people lie to me that there is no bs 6 model launching and just after 2 months it launched. They also gave me a defected car which had dents and its from the service centre managers mouth.