India Post — parcel undelivered

I booked the express parcel on 9th august 2017 for victoria, australia containg some mediciable items. It was told that it will be delivered within 4-10 days but it unfortunate on the part of postal department it has not been delivered even after elapse of 14 days. The last track of the consignment is lying at kolkata in air foreign sale since 11.08.2017.
My consignment no. Is - ef[protected]in.
Kindly track my consignment and give the detail to us.
Contact details - [protected]
Contact person - prabhat kumar govil