hey all my aircon on the car has not been working l8ly. the dials do not work......if i out it so that i want air on my face it will come out at the front window if i have it on the front window(dimister) it comes out at feet i think....so you get the point it doesnt do what i want it too....andy tips on how to fix that? and also when i have it on cold air it works great but with winter round the corner when i put it on hot its kinda warm but still cool air comming out any tips how to fix that?

thanks for reading.