Flipkart — Grocery item not delivered and charged

I have ordered grocery item from flipkart. They never delivered the product and updated the status as delivered. I have raised complain same day and keep following up with them .after 10 day when I called they started misbehaving.
Order ID is OD[protected]

Complain number is IN[protected]

I can't waste this much tome for 800 rs and simple grocer order. But wanted to expose flipkart for what they are doing with customer these days. And this is even for 800 rs.
I am planing to go legal way so that they think twice before fooling anyone else.