I intentionally mentioned the charge as a discount, for the purpose of not charging immediately. After the report is investigated and settled the caller either be charged or not. The point is the call could always be made and would be free, only in case of abuse of the number the number would be charged via telephone company. So anyone in danger could call and be sure that he wouldn't pay. The only problem I see here is prepaid phones which could be discarded after use. OR just make calls free and hire more operators and provide training.