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