Indian Railways — Unauthorized passengers in reserved compartment

Address:

Vadodara, Gujarat, 390008

We had traveled from Vadodara to Gangapur City on 06/05/2017 (PNR: [protected]) and had unpleasant experience:

There were atleast 200% passengers in our S4 (in our compartment there were 17 passengers in place on 8). TTE came and checked tickets of only passengers who had confirmed tickets and did not bother about others.

- There was no chance of sleeping as lights were ON and unreserved passengers were talking loudly or listening music on mobile
- Unreserved passengers were lying on floor so it was not possible for others to go and use toilet
- Unreserved passengers had closed doors so it was not possible to get even drinking water

While I could see that TTE had just shown his face only to see tickets of authorized passengers, who is responsible for safety and security of passengers as well as their luggage. Can wait listed passengers travel in reserved compartments? How come there were more than 100% passengers? I don't think IR sells more than 100% berths under wait listed. If it is the case then why TTE did not check tickets of passengers without ticket or improper ticket?