What message did the women of Warsaw send to the pope?

From the text:

From them Ruth learned of Nazis having to fight for every inch of ground, of Poles tearing up the pavement slabs and using them as barricades in the streets, and of a message sent to the Pope by the women of Warsaw: ‘Most Holy Father, for three weeks we have lacked food and medicine. Warsaw is in ruins. No one is helping us. The world is ignorant of our fight.’