Teaching

Yesterday I went to teach for 2 pm. I went to my classroom on time and saw that it was locked. No students were nearby. They should have been hanging around. I had told them there was class today. Anyways, I unlocked it and nobody showed up. I called my supervisor, who then called students, who all said they heard there was no class on Friday. I don't understand that because I told them the day before that there was class. My supervisor called me back and said that I should just lock the door again and go home. I was upset at that. What a waste of my time.