Amazon India — One product is missing in my package

Address:	Ernakulam, Kerala, 683106
Website:	www.amazon.in

Hello sir,
I ordered Miltop Cashew Nuts W320, 500g and Miltop Pistachio Salted, 1kg through "Amazon.in" on 17 October 2016 (Order#[protected] for my family. The expected delivery date was 27th October 2016, and after 16 days from the expected delivery date. I thought that maybe there is some technical delay in shipping as the "track package" on the amazon.in website was showing somewhere stuck before 27th october 2016.
And after all these days of long waiting my wife received a package today. After opening the package my was surprised that one item was missing, which is "Miltop Cashew Nuts W320, 500g". But this product is written in the invoice. I don't know who is responsible, amazon? courier people? or seller?.
And other products which I ordered with these products reached my family on time without any issues. I ordered these products from amazon.in because I thought it's a well reputed brand. So I trusted them. It's a big disappointment for a customer like me. After this how anyone buys any products from amazon.in. So I request you to look at my complaint and resolve it with no delay.