URGENT HELP TP BANK TOOK MY CARD

I just used an ATM, it charged my money (5.000.000 vnd), said the transaction was not sucessfull and took my card. There are no people in the bank, just the staff from the building trying to help. They say can only be solved by the end of Tet. These are my only holidays here. I am desperate, without money, I dont know what to do. Anybody can help me?