95 Contour A/C Problem

I had my 95 Contour A/C serviced and charged. It worked great. Cold arctic air, but only for a week and a half. Then it seemed as if the heat was on. I took it back, thinking there was a leak and they refilled it again. This time the air was cool but not very cold except the passenger side vent which seemed very cold compared with the others. I have seen water leak into the passenger side floor, under the glovebox in the past. Is this any relation to the problem and does anyone have any idea what the problem might be? Thanks

The water you see is condensation from the AC condenser. Every car does that.

have you had dye added, for a leak test?
mine had a rusted reciever/dryer, changed it last summer and been problem free since