Why would my temperature control work backwards

I take it you just acquired this truck? Either someone put a knob on it from a different year, or they installed the temp control backwards.

I bought it newit started this winter

That's totally weird.....I would pull a climate control unit from a salvage yard then. How it could totally reverse itself is a good one.

I did that worked the same

One more thing to add run the ac to day it got the carpet wet on the passenger side

That means that your A/C drain is plugged. Just run a piece of clothes hangar up it.