Bharat Sanchar Nigam [BSNL] — don't give call list of any person to without fir

Why bsnl give information of call list without fir i want to know conditions to give call list. I want to know my number call list can give by bsnl office to any one with my signature. I enquire in madanapalle bsnl office they give call list with out fir it is beyond conditions or not. I want give a suggestion to not give call list at any cost to anyreason to their own number too