First Flight Couriers — The misplaced my all important envelope

Address:

Karnataka

They have misplaced my couriered envelop and they are saying that they have lost the parcel and can't deliver, It contains some important receipts which cannot be obtained again. If i tried to say them that i will sue them to court they saying go to supreme court you can't do anything.

I wanted to know is our law so week so these companies just don't care when they misplace important couriers, I only went to them because they promise to deliver next day at 2pm.

I am realy confused,angry and also worried Because i have barred a loss of 30,000 now

This is there wed site http://www.firstflight.net/