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