Royal Enfield — Servicing Fraud

Actually i had given my desert storm for servicing. I asked the them to send the scope of work n charges. After a few days i got a message from them that your bike is ready to dispatch. And amount you have to pay is Rs 41, 132. But when i am visiting the service center they told me to pay Rs 89, 000. But after negotiation they reduce the price to Rs 73, 132. But i feel they cheated me . And i want to file my complain against them in consumer court.
My contact mail id is [protected]@gmail.com