SBI — unauthorized transaction via pos from account

I am intimated about an unauthorized transaction of rs7900.0 on pos [protected] at itunes.com/bill from my sbi a/c on 11.09.2019 (Txn#[protected]. I have no apple id, have never purchased an apple product such as itunes. This fraudulent transaction has been happened using by debit card detail, without my permission, even no otp was asked for the same. I demand a refund from bank for they failed to keep my account details secure.