Mumbai: A social activist from Pune has accused megastar Amitabh Bachchan of promoting superstitious beliefs, and filed a complaint before a court seeking action against the Bollywood actor. Hemant Patil has demanded a police complaint against Bachchan. The immediate provocation for the complaint was Bachchan’s portrayal of a ghost in a TV commercial for a children’s health drink. Mumbai magistrate Sita Kulkarni has placed the matter for hearing April 18.