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