DTDC Courier & Cargo — Mobile phone stolen from box

Organization sent me a mobile phone through DTDC from Bangalore. It came to Rewa, Madhya Pradesh and the mobile phone was taken from box and all remaining package was same as it is. When I took it, i checked it in front of the official and the mobile phone was not inside the box. I am sure that this all mishappening is from dtdc side as the package has mentioned weight of 500gm when it was shipped while what is received was of 240gm only. So, it indicates that the mobile phone was stolen in between which is completely DTDC side. They are not responding to my issue and not picking up the call.