Indigo Airlines — Suitcase badly damaged

Address: New Delhi, Delhi, 110085

On 26th oct ' 2016 we came from the flight and after collecting the luggage we observed that our one suitcase is badly damaged i.e; the wheels are broken. Then there only we complaint them about all this, they have given us the complaint paper and told us that vendor will come in 3-4 days at your place to collect that suitcase and repair it and then will return at your place only. But till today we didn't got any response from them. Now I have to travel which suitcase I will take with me . I have no other suitcase. Please give me the proper solution as soon as possible. Now who is responsible for this.
passenger's name: Sandeep Seth
bag tag no.: 2124366
baggage description: BU22WHX
passenger's contact no.: [protected]