어느 은행이신지요? ANZ: If you no longer want to be a joint account owner, all joint account owners will need to agree in writing or in person at a local branch. / ASB: To close a joint account, you can send us a secure message via FastNet Classic or come into any ASB branch. Instructions to close can be made individually or together depending on how you set up the account.라고 검색이 됩니다. 그러니, 해당 은행 고객센터 전화나, 이메일 문의로 확인해보시는 것이 정확할 것 같습니다.