RBL Bank — r shield insurance without my knowledge activation so plz cancellation

Hi am nethravathi m am one of the customer who is cheated by rbl bank...2 days before i got call from rbl insurance customer care regarding r shield insurance subscription that time i clearly told to rbl customer care person i don't have any interest in any type of insurance subscription... Even though they had activated... Yesterday i got my credit statement stating that r shield insurance premium rs.1000... How come if a customer is not interested in a particular thing how you people activate without their knowledge... Now i don't want to pay premium... Plz take immidiate action on the above incident other wise come and take your damn credit card...