The ABC axed the service in January, saying it was not viable and too expensive to maintain.
In a letter, Vanuatu's Prime Minister Charlot Salwai said removing the shortwave service to Vanuatu could cost many lives in the likelihood of a major natural disaster, like cyclone Pam two years ago.
The Daily Post said radio broadcasts to remote parts of the country have been cited as a reason the death toll from the category five storms was relatively low.