Poor Institution Service

I'm a 2nd-year Tourism Management at Unisa. Recently I had to do an assignment, the subjects unique number differed in my tutorial letter and my actual online study material (I had not yet received my hard copy handbook), I sent an email to my lecturer and Unisa saying that I am concerned because these are two different codes.

Neither my lecturer or Unisa responded (as usual), I understand that they have 1000's of students, but so does every other institution.

I received my handbook after the due date for my assignment, when the results came out I received 4% for my assignment. No lecturer has come back to me, and Unisa still does not answer. For a student who gets 80% this is unacceptable, I will not be penalized when I simply submitted what was given to me, if I didn't submit an assignment I wouldn't be allowed to write exam.

I am highly upset about this situation.