The Thane district administration has given 35 flat owners across cooperative housing societies 30 days to clear their outstanding dues or face possible attachment of their flats, the Thane District Co-operative Housing Federation said. Thane, May 12: The National Consumer Disputes Redressal Commission (NCDRC) has dismissed four revision petitions filed by M/s. Siddhanath Co-operative Housing Society Ltd and upheld orders.