OJK's authority is to deal with companies that make illegal investments by taking action to prevent losses for the sake of legal protection for consumers and legal defense. The Twin Peak Concept and Financial Customer Care programs are useful in providing information and education to the public on the characteristics, products and services in the financial services sector. The purpose of writing is to reconstruct the authority of the Financial Services Authority (OJK) in supervision to improve banking policies. The approach method in this study uses the constructivism paradigm, namely the paradigm with the ontology of relativism, the sociological juridical approach method. The results of this study, the researchers provide conclusions and suggestions that in fact the mandate of Article 4 of the Financial Services Authority Law on Consumer Protection assigns OJK to guarantee consumer protection in the financial services sector for all people, it turns out that justice has not been realized. While the suggestions are changing the rule breaking of OJK supervisory regulations, OJK supervision regulations are carried out by banking and non-banking financial services, as well as revising the customer protection law so that its effectiveness in protecting customers is more guaranteed.