During the season of pandemic, one of my professors used audio recordings of his lecture made in 2013, 2018 and 2019 to teach the class. Is this really appropriate? The audio recordings are of very low quality and have lots of noises. In the audio recording, I can hear students coughing, moving their chairs making sharp sounds. With all these noises I couldn't hear what the professor said in the recording. I asked for lecture transcripts but the professor refused. The ppt handouts were not quite useful since I couldn't hear the lecture content clearly. I was so frustrated with this experience. Should I file a complaint over this? Any thoughts?