Ministry Of Finance Govt. Of India — regarding two fraud transaction done through my sbi credit card

Dear sir/madam,
This is bring to your notice that there are two fraud transaction done through my sbi card on dated 27 nov 17 of 19999 rs to airtel pymt-billdesk when i have received two otp on my mobile then i have immediately contacted to sbi customer care and told about this and asked to block my card immediately and they have done the same but during this time transaction is completed after that i have also registered a complain regarding this to sbi card but now sbi card is telling that since this transaction is verified by otp that's why its total responsibility is lies on customer they are even not bother to do investigation on this and started sending the message regarding payments.