Jet Airways — luggage suitcase broken badly

Address:	400009
Website:	Jetairways

When i received my baggage at mumbai airport my suitcase was broken from mny places... It was proper at delhi airport n now its useless for me i want an answer for this why so happened with my luggage... It was an expensive bag n i had used it for first tym only n wht careless behaviour is this of whm so ever. I want some strict action to be taken on this what if while going my luggage fully brakes on d way wht i will do at that tym.. I want refund