A/C problems

I have a 2007 G5 with the same problem. Please help.

Update: I took my car back to the same shop-they found a leak in my compressor that they missed before. What a drag...their cost for the part is $400! I believe him-my huband used to work there. They charged it real good for me-has lasted 2 weeks so far-didn't charge me since they missed it the first time they checked it. Hopefully I can make it through the heat this year, just no moo-lah to fix it right now.

G5 get 08 same problem. Any ideas? Had compressor fixed and thermostat