Indigo Airlines — ticket not booked but amount deducted and no refund done

Hi i was booking a ticket from indigo mobile app on 03 apr 2020 for travel on 17 apr 2020 from aurangabad to delhi flight. While i was paying then it went to billdesk and after it came back to indigo site it showed a message saying transaction not successful, however, money got deducted from bank account. I tried to book again and same thing happened again and money was deducted twice without booking ticket. I got the mail from [protected]@ccavenue.com regarding confirmation of transaction both the times. Their was no communication from indigo regarding the refund. I am giving below details of transaction please refund my money back

Name - anwar khan
Amount - 12764 (Two times)
Ccavenue ref no[protected] and[protected]
Bank ref no - 826326 and 242110
Pay mode - credit card - mastercard