How to claim for a lost parcel worth 40k?

I sent a parcel on 7July2018 from Jetpur(Gujarat) to Ambattur(Chennai) via Gatikwe transport services. The parcel contained an order for one of my customers, worth almost 40k of clothes. On 13 July the parcel was in Chennai but was not delivered. And it's same till today. The courier company took almost 5months to confirm that they have lost my parcel and as it wasn't insured, they cannot fulfill my refund claim. Now they've agreed to send me an OBN certificate without FIR so that I can claim for it if I have the parcel covered by insurance. Please suggest, how do I go about it? Is there any poasibility that I can claim for the lost parcel. Thanks Abhijit