Indian Railways — laptop stolen train 12509 b2 seat 48

I am a student (Nataraj) persuing m. Tech in iit kgp travelling from bengaluru to kharagpur in 12509 gauhati express. My laptop bag containing a dell lap service no [protected] and my collage id and two atm cards and clothes was stolen around 6 :00 am at chennai station on 07/10/17. I informed tc, and all other service providers their response was not good. There was no rpf in the train. I was travelling in 3 tyre (Coachb2 seat 48). There is no privacy and security in 3 tyre coaches and you are providing facilities for sleeping. What is need for providing sleeping facilities without having safety for our luggage. How can some body travel in such trains.