Members of an Auckland-based Tongan church at the centre of a residency scam, are afraid to file a complaint in case they are deported, RNZ reports. Tongan lawyer Nalesoni Tupou has come across more than 100 Tongans who were promised residency for cash by two men who are not authorised immigration agents. Topou says Tongan families want a guarantee in writing from the government that if they come forward they will not be arrested or deported. The Immigration Advisers Authority (IAA) are investigating the scheme, and IAA registrar Duncan Connor has warned that, by law, any person giving immigration advice about New Zealand must be licensed by IAAt.