Southern Railway — southern railway regarding mysore to bangalore train seat reservation

Address:

Chittoor, Andhra Pradesh, 517520

I usually travel from bangalore to tirupathi once or twice a month. I book tickets every time. But every time i need to fight with other passages who does not reserve but have the normal ticket to sit in my reserved seat. It is really irritating to fight for our seats and a big headache. Mysore to bangalore tc is not available, no security available in this root. Entire reservation coach is like general. Then what is the use of reservation.