Datsun — defective piece of car

Address:

Bareilly, Uttar Pradesh

Here.. I dr. Rehana khan want's to complaint about the datsun redi go sports. I bought datsun redi go sports (The top variant) which costs me rs. 4, 30, 000 and the problem came since the i bought this car.
The mileage is really very poor it gives me the average between 10-12 in city and 12-13 on highways. I also took my car for a check at the service station of datsun and they asked me to drive the car regularly and milage will increase it self. I went there 3 times and they asked the same thing to drive regularly but now it comes to an heights. 6 moths are over and the milage is still the same.
Is there any defect in car or you have sold us the defective piece in the name of sports variant!
I want that my complaint should be considered and either you make the replacement of my car or refund my money. If not then i'll make sure that the sale of datsun redi go will be no more in bareilly up.
It's a serious matter to be considered!