Old women in Kanch

I was at Kanchipuram on a sunday and on my return journey i saw a old women weeping with bus ticket on her hand and she told me that the bus conductor was suppose to return balance amlunt which he promised to do it once he alights at Kanchipuram. THe amount was Rs. 90, which i am sure must be more valuable for the background she belongs to. We advised her to go to the counter and trace the conductor. I am wondering how people do not have the responsibility to settle dues then and there, how come he didnt even have the courtesy for her age. She was taken for a ride for sure. It irked me a lot. Came back with disappointment and anger which i couldnt vent it out...