Tamil Nadu State Transport Corporation [TNSTC] — Conductor Ignorant - Seating Issue

Conductor mobile : [protected]
Vehicle No : TN01AN3353
Route No : 831UD Bangalore to Chennai

Booked seat 13W for my brother. He bad informed the conductor an hour earlier that he would be boarding from St John's hospital. When he boarded the bus, the conductor had already given my brother's seat to one among a bunch of ladies who boarded the bus with no prior booking. The conductor has asked my brother to travel in the single seat next to the door. How can he sleep?? Everybody leads busy lives and we book seats because we need the rest. When asked about it, the ladies refused to budge and both them and the conductor spewed rude and degrading remarks at my brother. Such rude behaviour! After much argument and bad remarks, he gave my brother 21W
Why not do this earlier? The conductor's behaviour need to be checked so that there isn't anything like this later. I am deeply upset and hurt this happened. Kindly take the necessary action to end this. This happens a lot.