Bangalore Metropolitan Transport Corporation [BMTC] — BUS KA01FA1764 conductor abused me due to not having exact changes

Today I boarded in BUS KA01FA1764 from Spice Garden to IGate Junction. I didn't have the exact fare in cash. So, I tried to pay the fare via Gpay, but the conductor refused, saying that QR code doesn't work. Then I gave him a 200 rupee note, but he started to say I cannot give you change because it is not my job you to give you change. It is your job to bring exact fare. I asked him, where it is written? Why have not put a notice? He started to abuse me that, why should I write anything in Hindi or English? This is Karnataka. You should learn the local language.
Although this is a single incident I'm reporting but this happens with most daily commuters. In today's time most of the places we pay by Gpay. So always cash amount is not available to people.