Uber India — Loss of item worth 6k through Uber package delivery

This is to be noted that on 9th December at 11:29 AM I scheduled a package delivery through Uber package delivery. The rider named Biswajit(details of the trip is attached ) took the package(worth Rs 6k containing
i) expensive baby blanket
ii)designer blouse(quantity 2)
iii) towel
iv)pillow cover
v)dress
vi)petticoat
from my address (80/1, Vidyasagar Sarani, Barisha Kolkata-700008) and left for destination (Popular Beauty Parlour- 42/109, Bedia Danga 2nd Lane, Kasba, Lalkuthi- 700039).
He even called the person (Prateek Sadhukhan) to whom it was to be delivered at 12:18p.m to get the location of the exact building.After that he ended the ride.When the receiver told me that he hasn’t received the product, I contacted Uber support team and thererby contacted him via the number provided by them ([protected]).I called him, and he told me that the item fell from the bike and he don’t know where it fell, after which I called him repeatedly and he is not picking up the call.