Bajaj Finance — deducting too much money from my account giving so many ifs and buts

They are deducting money from my account every month after completion of all my dues of previous loans.. Just want to get rid of them.. Plz help me.. Totally fraud organization.. Cheater.. It was my life's greatest mistake to use their emi card when i was in need.. Totally fraud.. Someone plz help me.. Already send mail to them but no reply and continuously deducting money from my savings account.