ICICI Bank Savings Account
ATM not dispensed money and debited from account

I enter in ICICI ATM to withdraw Rs.1900/- i got Rs.900/- and my account is debited with Rs.1900/-. i have made complaint in the bank and they reverted back with message that we are unable to reverse the transaction as it has been fully paid as per our records. so what should i do? No person is happy to make wrong complaint. I have withdrawn cash from ATM lot of time but this is unlucky transaction