I hate summer

The last few weeks our A/C at work has been "on the fritz". Its a pretty weeny A/C; because if its been on for longer than a few hours at a time, it keeps on running, but doesn't really do much to cool down the air any more. We'd survive by turning the A/C off, and opening the front door of the store. That would allow the A/C unit to cool off, and we'd get some fresher air from outside, often with a breeze. It worked pretty well, we managed to keep the store at about 75, going up to 77 or so on hot days.
So we told the maintenance group about it, and their response was "oh well your employees are probably screwing around with it." They put a new thermostat on, because their oh-so-informed conclusion was that us employees (who have nothing better to do at work than fuck around with a stupid A/C control panel) broke the thermostat. And part of their conclusion was to lock the control panel so us ruffians won't touch it. Now that we can touch it, and the A/C unit is (obviously) still broken, we can't turn it off to help it cool off. So now it just sits there and runs all day, effectively doing nothing. So now the store temperature starts out at about 77 in the early morning, and slowly rises to a baking 87 - 88 degrees in the afternoon. And this is towards the back of the store. The bar, where the urns, the boiling water unit, and the espresso machine are, is probably in the low 90s. Obviously, not the best working conditions for people who are constantly moving and handling 160 degree+ beverages.
Great solution maintenance company. You've sure showed us ruffians who's in charge of the A/C. Now would you please fix the real problem, because I really think the employees are starting to slowly go insane.