Indigo Airlines — My Luggage has completely damaged

Address: Gurgaon, Haryana, 122 002

Website: www.goindigo.in

I was flying by the flight Flt No.: 6E 414 of indigo from Banglore to Mumbai.
I had submitted my luggage as a fragile object and had requested to take care.
When i open the box today after coming home 50% of the parts have been damaged. Despite request they have done it . I want to know who is going to help me with the refund and how will the compensation be done.
i am a student and i cant again afford to remake everything