Delhi Transport Corporation [DTC] — Conductor charging extra fare

In the night around 9.30 PM, I took the DTC green bus (347 Kashmiri Gate) from Okhla Bird Sanctuary bus station. The conductor asked me to pay 32 INR when I contradicted that it takes only 29 INR, he said this is the last bus departing from here. If you want to travel buy the tickets paying 32 INR. I had no other option left I was too tired so I paid that much I gave him 200 INR and in returned he gave me only 160 INR when I asked for 8 INR he told me I don't have change. I mean what the ### it is. Then I thought to complaint so none of the other passengers get harrassed. I also noted the bus no DL1PC3092. Please take strict action against the conductor. He always proves the passenger the cost of the ticket before giving him the price.