Cheating after sale

Look and Style Sturdy Comfort Average, Noise in Dashboard and somewhere in Body. not exactly located by Service Station. Pickup Comparative Low in AC Mileage Good Best Features Large Space. Needs to improve Engine Noise while driving in AC, Body Noise and Very Dim Fog Lamps. Overall Experience- Very Poor after Sale. Company enforce updation to change Oil and Filter on every 10000kming instead of 20000km as per mannual provided during sale, saying that change of Oil and Filter on every 20000km reduce the maintainance cost. 4000/- is the cost of this change. Company cheated the customer after sale. Even continueous followup can not help to solve and refund the charges. Be aware before bying it.