You must respond to your jury summons even if you don’t think you can attend jury service. It’s important that you respond as soon as you can. It’s not an option to simply ignore the summons or not turn up to court.
Ministry of Justice 쪽에 연락을 해보셔아 할 것 같은데... jury 참석 전에 기간을 꽤 오래 주기 때문에 그 동안 우편함을 전혀 살펴보지 않았다는 것을 저 쪽에서 납득할런지가 문제겠네요