Charles in Charge

Hi Everbody, Here's the problem with my1998 outback: the air conditioner started to cool then heat up then cool then the heater started to blow cold and then heat and the heat was hard to control, turn it down a little and it would go to cold, then try to warm it up a little it goes hot, and yesterday it overheated and the upper radiator hose sucked flat. What the hell is going on!!!!! Help Me..... Charles..........