As most of the Flipkart customers from Navi Mumbai must have known or experienced, that most of the times their area pin code was not working for most of the sellers on Flipkart except for one, that is WSRetail.
I have written to them regarding this bug. I call it a bug because as you all know Navi Mumbai is very well connected place and most of the other online shopping portals and couriers face no difficulty in delivering items to various divisions here.
At that time I got the same pre written reply from them that they will notify me once the seller of the product starts shipping to my pin code. But after approximately 1 month that problem seem to resolve now. You can now order product from any seller on Flipkart and get it shipped to your Navi Mumbai location.
At last they listen to my feedback!!!