Ibps Billdesk — Payment deducted twice

I registered for nabard grade A exam.
I paid the registration fee. Amount deducted from my account bu transaction failed.
Did this 2nd time and then successful.
Want refund for 1st transaction ASAP.

Details -
IBPS transaction ID - nabardjul24LV[protected]v1
payment date[protected]:15:23
amount - rs 1003
Payment gateway transaction ID - YHD[protected]