Heat on one side and air on the other. Doesn't matter what setting the temp is o

What is your question?

This just started the other day. It was hot and I turned the sir conditioninformation on. The driver side was cool but the passenger side is blowing extremely hot air. Checked all options to see if it changed and it doesn't. This began 9.15.16 and is still not functioning properly. Extremely uncomfortable for the passenger