Indian Railways — misbehavior from the co-passenger and tti's ignorance

Me and one of my friend were travelling from thane to pune in train no.22143. Train started from thane at ~9:50 p. M. On 15th december, 2017. We had confirmed seat (Coach no: s2, seat nos: 10 & 11). After riding, we found two drunk passengers were seating on 11th no seat and were eating. After requesting multiple time, these two passenger did not leave our seat and continuously saying that they will leave after finishing eating. One of the co-passenger who were allotted seat no 12 (As i remember) were siting on the top berth (I guess seat no 14) which is opposite to seat no 11 were supporting these two drunk passengers. I was lying on the seat no 10. Although tti came, nothing happened. Meanwhile the guy who was sitting on seat no 13, came down by keeping his shoes on seat no 10 where i was lying. When i asked him not to keep his shoes on my seat, he got agitated and slapped me. This whole incident happen in front of tti and other passengers who were local people. Nobody including tti did anything to the guy who slapped me. I got scared and the guy who slapped me was telling me random things. This was a serous offence. So i request the higher authority of the indian railway department to take serious action against the person (Who were allotted seat no 12 of s2 coach) and tti who were present there but did nothing.
Also i must mention here that except the people who were having confirmed seats, there were many people in the coach. Most of these people had no ticket for sleeper class. The situation was extremely difficult. The behavior of the tti was indifferent and the journey was quite scary for me. I request once again to the railway department to take stringent step so that in future similar behavior does not reappear to any railway passenger.