Tamil Nadu State Transport Corporation [TNSTC] — Currency denomination issue with bus conductor-reg

I am working in a private company and on[protected] Monday, I had to travel from my home town Coimbatore (Singanallur) busstand to Dharapuram as an official trip in the bus no (TN 38 N 3327) at 7.10 am. When I enquired the bus conductor in busstand, he told me to board the bus only if I have proper bus fare Rs.60 denomination. I had Rs.100 currency denomination and conveyed to bus conductor, but he refused and insisted me to board the bus only with proper Rs.60 denomination and after lengthy argument with bus conductor finally he allowed me to board the bus. This made me really embarrassing situation in the morning hours and pls request Tamilnadu state transport dept to take immediate action on that bus conductor and please provide passengers alternate payment modes like gpay or paytm to avoid this kind of problems in future for passengers.