Bajaj Auto — amount debited from my account in an unauthorised manner

Address:

Thane, Maharashtra, 421204

I received no message alert for the deduction happened like i usually get for other transactions of my account. I hold an account with icici bank. There was an amount deducted for rs. 650 from my account which mentions it is an auto debit. On contacting bank they said i have approved on some ecs to bajaj auto hence the money was deducted wherein there is no loan, no approval no relation with bajaj auto. This is a fraud. I am worried about how my account information are with these guys and they deducted money without my knowledge. I need my money back plus i need a stringent action to be taken towards bajaj auto