Supreme Court (SC) today issued notices to the Centre and Whats App messaging service, regarding payment services and appointment of a Grievance officer. They would need to reply within four weeks of receiving the notice. The court was hearing a petition seeking restraining the App from payments systems and to appoint a Grievance officer. These are a must as per rules, the petition said. It also said that Whats App was not following Reserve Bank of India (RBI) rules regarding its servcies.