Flipcart is the best app but only some problem of this app in Diwali time I am book the some small product then I put the pin code but not take this code but I book any big product then he take code.so my problem is all product small and big apply the all pin code in available my city is Ranchi and this is the capital of jharkhand and this popular area of jharkhand then not take pin code so in other not popular city in what problem facing.so solve this problem