A/c

If Freon was "added", the system may have moisture in it and that causes blockage of the expansion valveand makes the soamolies hijack oil tankers. Just kidding. Figured this would be all foreign to you anyway, no offence.
Ok, Adding freon is not really a good fix. The system should be evacuated with a vacuum pump to remove any moisture in the system which will freeze and block the expansion valve, Hence, no cooling.Having the signs of this problem already should have called for evacuation. Adding freon from a kit increases the possibility of introducing more moisture into the system. You will need to have it properly service at this point. The drier will also let go of any moistue it has trapped when evacuated for 30 minutes @ 29 in. of vacuum - good luck