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