Indigo Airlines — Account debited for failed booking

Address: Hyderabad, Andhra Pradesh, 500058

Website: book.goindigo.in

Hi, I have booked a one way ticket from Goa to Hyderabad for Saturday 28th November 2015 through my SBI debit card today (12:00 AM, Saturday 21/11/2015). I made the payment through my Maestro card, though my bank account have been debited for Rs 6200 INR. but i received an error saying the ticket have not been booked. I contacted customer care and re-booked my ticket through my other debit card, which is confirmed and i received the itinerary as well. Please suggest what needs to be done to get my money (Rs. 6200) to be refunded for the failed booking. As per customer care person, he said it will be credited into my account within 3-5 business days. Is there anything I need to follow up from my end or will be credited? Please advise, Thank you, M. A. Waseem