Disappointed at the Physics Department

I’m currently not doing so well in physics 1 (PHYS 111) and the grade on the second exam wasn’t the best. The average for my class was less than a 50 and they even made a mistake on some question on the exams so we were told that we would get some points back for those mistakes. However, after receiving my grade and exam, I didn’t receive any points back. I thought that they changed their minds, but after asking another person in class, they told me that a lot of people got 4/16 and others got 2/16 so idk what happened. I thought it was supposed to be a common course and they were supposed to give everyone the same. I’m probably going to fail this class anyways but stuff like this from the physics department and other departments at NJIT are just disappointing.