chat with CC people. I never faced such problem, it might be either the "COURIER people theft" or the "FRUAD BUYER".
But most of the times it happens due to bad packing, so some people who work in reputed couriers try to steal things from boxes. IF U packed it nice and tight with completly closed and no way to open with out tearing the packing then nothing happens.
Hope U solve this issue soon, in the future take great care while packing and be professional, if U look for a couple of tens of rupees then U loose thousands.