Indigo Airlines — Flight Refund

Address: Chandigarh, Punjab, 160101

Website: www.indigo.in

Hi,
I have booked ticket from Chennai to Delhi on Oct 7. Due to some network issue, session lost. In meantime ticket got booked suddenly. Unaware of this action, I have booked one more ticket. System is very poor to detect the information and booked two tickets with identical information for indigo same flight. As, I travel via one flight only. I am attempting to get my genuine refund for other flight with PNR number SGE7JX .Date :October 15, 2016. I tried to contact with customer care also. But, not getting any particular response.
Please resolve the issue ASAP.
Thanks