housing problems after job loss Korea NHIS Korea foreign residents health insurance foreigners korea living in Korea dependent insurance Korea healthcare Korea address change Korea address registration foreigner Korea ARC address change job loss mistakes Korea foreigner billing error foreigners Korea national health insurance korea foreigners bank account Korea foreigner insurance after unemployment Korea mobile banking Korea foreign resident fine korea address registration risk Korea address reporting korea foreigner moving in Korea foreign resident tax Korea local office notices foreigners Korea foreign resident bills Korea local office foreigners Korea expat tax risk Korea foreign resident bills korea overpay insurance utilities korea fix billing health insurance bill Korea ARC bank account Korea foreign resident Korea Korean bank account HiKorea address report