Bangalore Metro Rail Corporation — employee

This happens everyday in indiranagar metro station. The ticket from indiranagar to majestic is 25rs and everyday i would be the one providing the 5rs. Once i did not have the change and i clearly saw the person in front of me giving 5rs to the counter person. So when it was my turn i have 30rs and the same drama started making faces at me, murmuring something to themselves. I told them that i didn't have 5rs and they asked me why i traveled in metro, i should go in bus instead. Is this how they are trained? Most of the time they are just chatting with their friends inside. I'm working and i will have to rush to the office. Something needs to be done.