Delhivery — Shipment lost while returning

This is to inform you that my order id[protected] which was to be delivered to delhi was returning to me stating reason poor packaging which according to me wasn't poorly packaged and now my shipment is lost, what should I do, return me the whole parcel or refund me the amount please.It was a big order fragile and prestigious to me, how can I bear the loss.
My delhivery account name is MACRAMALLEY 0063800.