a student absent

These students had already canceled their subscription, but they still had three lessons left with me. They are two girls whom I teach (they use the same account ie I teach them at the same time the price of one person). I had a lesson with them on Friday, and less than 12 hours before the lesson they sent me a message asking if it was possible to reschedule because it was the holidays and they were not at home. I agreed and rescheduled it.

Today, we were supposed to have a lesson, but they didn’t attend. I waited for 15 minutes and sent a message, but they didn’t respond. I had prepared the lesson and waited, so my time was wasted. Now I’m confused: should I get paid for this lesson, or should I reschedule it again? In her last message, she said “the lesson,” not “lessons.”