Indigo Airlines — Missing of luggage

Address:	Rajkot, Gujarat, 360004
Website:	www.goindigo.in.co

I had traveled from Delhi to Ahmedabad by Indigo flight no 6E 4373 on 9th Nov'16. When i was in flight i got massage from luggage staff that they are taking my one black trolley bag for rechecking due to presence of power bank in bag and they assured me to send it in next flight but when i checked out at Ahmedabad airport i do not received it in next flight, so i had informed concerned indigo staff and registered complain with necessary all evidence and they had replied that will get luggage and deliver it to me within two days. but till date i have not received my luggage and as i had do continue followup to Ahmedabad indigo staff but they says delhi staff not able to trace my luggage...
Please do the needful and help me for the same...