Indigo Airlines — Not cancelling ticket and not responding my request

Request for ticket cancellation West Bengal Poultry Federation Nov 21 at 12:59 PM To [protected]@goindigo.in CC Bikas Sarkar Message body Dear Sir, We want to cancell the ticket as follows: Name of Passenger Flight No Date From To Booking Refference No Bikas Kr Sarkar 6E348 25Nov'15 Kolkata Hyderabad YBSHUT Bikas Kr Sarkar 6E539 26Nov'15 Hyderabad Kolkata YBSHUT I have mailed to [protected]@goindigo.in on 21st Nov & 22nd Nov/'15 till now I did not got any communication. Thanks & Regards S. Biswas For West Bengal Poultry Federation Kolkata Mob.No:[protected]