Chevrolet Lumina Air Conditioner Leak

A/c Pump Leak Can I Fix It With New Seal Or Can I Get A Pump In Junk Yard To Work Tight On Money New Was 850.00 Put In

I Have Checked All The Lines And The Compressor Works Just Fine But Every Month I Have To Put 3 Cans In The Car. Any Suggestions?

My Floorboard Stays Wet Really Grts Wet Overnight If Use Ac A Lot During The Day. Can It Be Stopped Up Because There Is No Water Ever...