India Post — Parcel stuck at kolkata ap tmo

My consignment number EM[protected]IN has been stuck with KOLKATA AP TMO from the last few days. It was an urgent requirement and hence was sent through India speed post from Mumbai. The parcel is stuck with them and there has been no response from their end. Because of their laid back attitude, I will have to face major losses. If this is the kind of service India post will provide, what sort of an example is being set for the other courier services
This is really really disappointing. Who will bear the losses for me