Indigo Airlines — damage of hard case trolley bag

Address:	Mumbai City, Maharashtra
Website:	www.goindigo.in

While travelling from bengaluru to mumbai by indigo flight no. 6e 566 on[protected], they have damaged my new hard case trolley bag badly which cannot be repaired. Now they are offering only rs. 3500 as compensation for the bag but the value of the bag is around rs. 6500 to 7000. I request for the complete compensation as the bag is not repairable.