Indian Bank — pos transaction failed but amount got debited from my account.still not refunded to my account.its been 8 days.

I was booking a ticket in IRCTC on 8th may and the transaction of Rs2800 got failed but amount got debited from my account. And still not refunded back to my account. The Refund status from IRCTC is that "Amount sent to the bank".Kindly lemme know what is the problem and I want my money back ASAP.

Cancellation ID/Refund ID - [protected]
Transaction ID - [protected]
Transaction Date - 8 may 2018
Transaction Amount - 2800