SETC — For refund process

I tried to book 2 tickets from chennai koyambedu to Sivaganga for 20.00pm bus on Dec 17th 2022. During the transaction process, the amount of 1015 rupees was debited from account. But in the portal, it shows transaction was failed. The ticket was not confirmed and the debited amount was not refunded. So please help me for refund.

Thanks