HDFC Bank Forex Card — multicurrency forex card no...8224

Address: Chennai, Tamil Nadu, 600002

I had loaded my forex card with aed only. I swiped my above card at royal continental hotel, dubai on[protected] for 3720 aed. But i got message from
My bank (Hdfc bank) stating that 3966 aed debited from my account instead
Of 3720 aed. I made my complaint with my hdfc bank and they replied that
Bank charged dcc of 4.49% plus 79 aed ie. Total amount fo 3966aed. Also i clarified with the hotel they swiped only in aed. Now i am incurring loss of 246aed. Please instruct accordingly to our bank