Nexa — manufacturing defect of bumper

Address:

Shop no 1 c block east of kailash, New Delhi, Delhi, 110003

I purchased my ciaz delta on january 2019 from the 1st week i am facing problems
Within 2 weeks battery drained out then after 2nd service mileage came to 12kmpl from 19kmpl and company claims 28kmpl
After 2nd service done with 3 days again betty drain out
Every time they charge and return my car
Does new car battery drain like this
Ok
Den
My car got hurt on rear bumper on 7th may 2019 i went to service centre for new bumper fix but i noticed that while my car was parked in sun light in service centre my bumper colour was totally mis match with body colour and that difference is only visible in high sun light
Now service centre told me to visit showroom
And sales boy from whome i purchase my car is not giving any appropriate answer
Now i am in daliama that why my bumper has been changed is it get little bit scratches or my car has been damaged by nexa staff
Kindly register my complaint i want to exchange my car or take it back and cumpansate the valve of the car
I can rather switch to hyundai or on honda which is much better then maruti nexa
My car no. Is dl7cq7336
My contact no. Is [protected]