Without Password or OTP my 1499/- rupees get deducted from my account

Without Password or OTP my 1499/- rupees get deducted from my account
I don’t know how 1499/- rupees has been debited from my Kotak Bank account,from Amazon India CYBS SI
No OTP or password was asked without any restriction or legal action my money 1499/- got debited from my account