My air and heat don't work

My air on the driver's side use to come on and it blew hot air on the passenger side and cold air on the driver's side! Now it doesn't work the panel won't come on at all! When it was cold the heater worked! Now nothing! Help it's hot!!!

probably the overcomplicated climate controls- the days of a lever pulling on a cable are long gone- we must all pay the price for electronic wizardry, unfortunately