Desperate!!!!

Today, 31/03/2008, Monday, I just received back my Test 2 result for BSM1933 Mathematics Engineering II from my lecturer. I am very angry and desperate now. I just scored 55 out of 60 and it made my carry marks for this subject to become 44.6% out of 50.0%. I knew how to solve every questions in Test 2 but due to some careless mistake and some "errors" made by the lecturer that responsible for the Question 1 in the test paper, I can't get high score for this subject. Then, I tried to persuade my lecturer for not deducting my marks for the part that the lecturer made mistake but finally I failed to do so. "Sir, this is not my mistake, I did the right thing if I followed as what were written in the question! Why you give me wrong? " I asked my lecturer in a more polite way. However, he replied:"No, even though the question printed out with some errors, you need to ask me for the right question during taking the test! So, seems that your final answer not the same with my answer scheme, so I must deduct your marks for that..." WHY??? Why I can't get full marks for question 1 although I do the right thing? Why all the lecturers did not make any announcements that got correction for question 1? Why my lecturer just informed those who asked for the mistake in the question 1 during taking test?
It is UNFAIR for ME!!!!