Redbus — Travel was cancelled in the middle because of smoke in bus

Address:	Bangalore, Karnataka, 560029
Website:	www.redbus.in

I have booked ticket with Redbus for Venba travels from Bangalore to tirupati. After a journey of 30 mins there huge smoke into the bus because of no oil in the engine. They not even check the bus conditions before it starts. They left us in the middle and not even responding properly. SO whom I should ask for money Refund. ANd how the travels starts without an oil in the bus?