ICICI Bank — Money debited from my account but got no cash

Address:

Kolkata, West Bengal, 700040

Hi. I'm a sbi account holder. I went to a icici atm on 04/01/2016 at 8:58 am to withdraw ₹4000. 1st time it shows transaction was failed. So i tried another time. This time the same result. I got no sms about any transaction. Latter when i checked my balance, i found ₹8000 was deducted, ₹4000 each. How can i get that money back? Do you have any helpline number? Please help.. :-)