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