First Flight Couriers — Incorrect delivery in chennai instead of west bengal resulting in loss of 15 lacs

Address:	122001
Website:	firstflight.net

I availed first flight courier to help deliver an important document in west bengal. i told the fast courier delivery service and paid premium amount of rs.360 instead of the normal service. the committed delivery is 2-3 days.
The item was logged for delivery on 03.07.2016.inside the package contains my lic original documents which are being sent for en-cashing. those were the original documents.
As no details are available online, today, on 08.07.3016, i asked the dispatch center about the whereabouts of the package, they said the package was delivered in chennai. i was taken by surprise that a package which is supposed to be delivered in west bengal, how can it go to chennai. the dispatch center had nothing to support. i was panic stricken as all my lic original documents are inside that package.
Now they asked me to wait for few more days. they don't have any visibility on the package.
I will incur a loss of 15 lacs if the original documents goes on missing. i don't know where to go and whom approach. pls help me with this. this will be a massive loss only because of first flight's negligence. pls help

Delivery address
Agent - prabir bairagi
Dakshin bijoynagar,
Jaynagar, south 24 parganas, west bengal 743338

Delivered location - unkwown, somewhere in chennai.

Consign no - 0991p0032946

Can i lodge harassment and no-support of services against this courier service?

Regards
Pulasta
[protected]