Indigo Airlines — Refund of money

I had booked flight ticket from Imphal to Gauhati on 15th September, 2021 for the 18th September, 2021 and paid Rs.10, 134/- but no confirmation recieved. So after an hour I re-booked my ticket paying Rs.9534/-and this time recieved PNR and confirmation recieved. I was waiting for refund for my previous booking amount but still no refund has been made. Kindly look into this and refund my money.