Reserve Bank Of India [RBI] — savings account online transaction fraud

Address:

Kolkata, West Bengal, 700071

I am an account Holder of Axis Bank Shakespeare Sarani Branch Kolkata
There was a fraud transaction done through my debit card on 14th July at around 8:30 pm when i was at home. My debit card was with me only. My account was debited with an amount of 720.44 INR which was done at my account without me sending an OTP or any pre transaction message. After the amount got debited i received the sms /message.
15th July whole day i had tried to seek help from Axis bank Helpline but none turned around even after repeated saying.Even customer care executive assured that they will revert but they didnt.
I went to Axis bank, Airport branch near my residence on 16th July Monday morning and lodged a complaint. I have talked to the Manager and they cannot even provide me answer for this.
My question is how come Axis bank can allow to have such fraud transaction in my account, i.e my card has been hacked and such a transaction have been done. What security is axis bank providing ? Now Manager is saying if i have shared the card with anyone. These kind of execuses will not really work. Today fraud has been done for 720 INR, it could have been 7000 or 70, 000.
I need consumer security and they have to repay me this loss amount.
Axis bank ought to provide an answer for this.
Need your help to resolve this at the earliest.