India Post — non delivery of article

Address: 798620

This is my honor to inform that the article send by me from h. O bellary, karnataka to zunheboto, nagaland on 5th december 2016 is not deliver. I have tried online tracking and enquiries sufficiently but still no response from the authority of india post. The consignment at the time of booking is enclosed below. Do any one help me.

Regards
Ighato