Hyundai Motor India — fraud rear camera installed, and charged for the original one.

Address: Thane, Maharashtra, 400603

Website: www.m.hyundai.co.in

I've been having a lot of complaints from my i10 grand petrol, the mileage it's giving is less than 10 (It's only been a year since i've bought it)
The worst case being: when asked why is the car giving such a less mileage, i was been told "you're a lady driver, hence you're getting a less mileage, we don't get such complaints from male drivers"
Adding to that:
The bluetooth never works (I've been so close to having an accident since ive to check on the phone who's calling)
On giving my car for service they took away my radio antenna as well, also emptied my petrol tank - so much that there was no petrol in the reserve tank as well.
On asking, i was been told that i'm "accusing" them.
They put up a duplicate rear view camera in my car, which stopped working after 2 months. And it's been fixed now. - after a year.
I'm very very tired and there's no help from their side, me being a media student will take this case further ahead if my issue isn't solved.