RBL Bank — biggest cheaters

I have seen many complaints regarding the same fraud done by rbl bank. How they are looting customers by providing free card and charge 750rs.in name of r shield insurance without customer's consent and i have been cheated the same way. They tried to convince multiple times for my consent but i always denied it and then they finally charged it out of consent. Seems like they have made this useless card just to collect 750 from everyone. As this is so useless card can't be accepted anywhere. Ever since i got this card, transaction always fail and i have just one charge of 750 that too for services i never agreed to buy. I need them credited back and account closure as soon as possible and i'm not going to pay single rupee for this fraud. I have even sent mail to them but no response.