Activists in South Korea say authorities are not doing enough to help victims of housing fraud. The country's rental housing market features a unique system known as "jeonse" which allows tenants to pay huge deposits to live rent-free for years before getting all their money back when they move out. The idea is that landlords get access to interest-free cash but the system is now rife with fraud -- police data suggests more than a billion dollars is lost to jeonse scams every year. One such victim is 37-year-old Park Hyeon-su who was evicted from his property after his landlord vanished. "I've given up on dating, not to mention getting married or having a child," says Park who uses a pseudonym for his jeonse activism to protect his privacy. IMAGES AND SOUNDBITES