Umm... what exactly is wrong with it?  Is it not blowing cold?  Is it a little warm.... Is it loosing refrigerant?  Is the A/C clutch engaging and turning the compressor? Is it blowing at all or is the fan dead?

I'm sorry but that is a very vague question.

does it smell like shit?  if it does it's because it's a shitty car

asking a question like this deserves an answer like this...check your tire pressure...and empty the ash tray...hope this helps