Trackon Couriers — deficiency in service

I had sent a package from coimbatore to pune with consignment no.[protected], but the package did not reach the destination within the time limit promised. Further when the package arrived at pune it was kept at the warehouse for 2 days and was still not delivered. When the package was finally collected from the centre as it wasn't being delivered, it was noticed that the package was opened and items were missing. Three packets of dry fruits worth rs 1800/- were missing. Further, on checking the weight of the package at the centre we realised that there was a significant difference in the weight also which clearly proved our case of items missing. The complainant service of the company is not accessible and even though we tried complaining there was no outcome.