Mahindra And Mahindra — mahindra gusto purchase bad experience

Address:

Nainital, Uttarakhand

I have purchased mahindra gusto 125 cc (Engine no. Ulehe001047) (Chassis no. Mcdavibivhif01066) in 28 september 2017 from m/s shiv shakti motors, haldwani for nainital city, and my gusto is not running perfectly, even in single person pick up is very bad & engine is making some extra ordinary sound, fuel average is very bad.
Then i take this gusto to your haldwani service center, they change oil & deliver to me and said that now its ok but gusto is same as before, its feel me that dealer m/s shiv shakti motors, haldwani has sold me defective piece, after that i complaint in company & your area service engineer mr. Gupta has send engineer to taken this gusto to haldwani service center, and on 17/11/2017 he comes to nainital but gusto is same as before, know he is saying there is some defect in engine and they have not that parts, it will come from pune.
I humble request you to change this gusto with new one or i will go to the consumer court & forum.