IIBF — Regarding Application fee of JAIIB

Dear Sir/Mam,
I have paid examination fee of JAIIB EXAM on 2 mar 2021 which reference number is 880038 paid by debit card of HDFC bank but amount rs 1917.50 was deducted and my account got suddenly logout and after waiting period of 30 min its not reflecting in my membership account neither it was reversed in my hdfc account .i have emailed so many time to iibf but there is no rply from iibf side