Jet Airways — international KQ flight missed due to Jet Konnect delay

Address:

Maharashtra

Hi,

My brother, a student had an international flight to Africa KQ 203 departing at 3:10 am. He missed his flight due to delay of the jet airways 9w2704 expected to leave reach Mumbai at 00:45. The flight reached Mumbai at 2:am today 12-May-2011.
He informed Jet Airways he had an international flight from Bangalore one hour before normal scheduled boarding time.
The next international flight is more expensive. Where is the money ?

Now jet Airways denies responsibility in this loss.
What can we do to get justice done ?