Исправить грамматические ошибки: 6.I am trying to call the festival organizers for the last three hours, but no one is

Исправить грамматические ошибки: 6.I am trying to call the festival organizers for the last three hours, but no one isanswering the phone 7. John, which brother is a director, is having a theme party tonight 8.I am exciting about going to Ustug for winter holidays 10. You always throw all your things everywhere! It's awful!