Corporation Bank — fraud transaction from my account

Address:

122001

Sir, i am lallu prasad chauhan working under r s international and i have my salary accountability in your bank in branch 3305 gurgaon sec 4 huda market. On dated 14-12-17 in my account balance was 9.69 rs and at the time 5:38 pm i got the massage for 2000 rs transaction. How it is possible??? And my account gone in negative 1990.31 rs. When money credit in my account, 2000 rs deducted from my balance. I have complained for the same but i didn't get my money back till date. I request you to please return my money back. My account details are a/c no. - [protected] branch 3305 gurgaon sec 4 huda market transaction details attached for you review.
Best regards
Lallu prasad chauhan
[protected]