Indigo Airlines — Amount not refunded

I booked a flight ticket in via.com and my booking ID FMNBA3IYGS5VU. I booked a ticket on 4th September for 5 oct date of travel.But I cancelled the flight for some reasons . Till now i did not get refund. Airlines is telling tat they gave refund to via.com. Via.com says they did not get amount from airlines and hence it ll take time. But they are not ready to give a clear tine frame. Plz help me to get the refund.