When I lived in the dorm in Hawaii, my room was stuck at 84 degrees, despite 24/7 air conditioning. My buddy's romm was a nice 73 degrees. I called the AC guys and they came over to check the problem just about every month. They confirmed the AC unit was running and that the air coming out of the duct was 70 degrees.
As far as they were concerned, the AC unit was working well. The problem was that not enough air was making down to my end of the dorm.
The solution they came up with was buying a new rooftop AC unit and making sure each dorm room got the same flow. They never executed the solution because it was too much money, and those in charge didn't think 84 degrees was a hardship for me to endure. They were right, it wasn't too bad.
But maybe there's the problem, Armando, the bldg's AC unit is just undersized?