I would push for them to replace some seals or I mean at least find the source of the leak. A/C refrigerant does not "run out" and the only way for the system to be undercharged is if it has a leak or wasn't ever properly charged. They can test for leaks. If they don't find any I would ask them to put the system under a vacuum and see if it holds. It is super common however for the leak to be coming from the compressor. The shaft seals are the major leak point but it was to my understanding that it wouldn't happen so soon. Shrader valves can give you some headache also.Update: Took my "new" 2015 GSW in for the 1,000 mile check-up on Saturday and the dealer recharged and tested the system. It seemed better yesterday in our humid 85 degree weather. Hopefully that's fixed it! I'll know for sure in mid-August.