Unfair Treatment

Last year my financial accounting assignment, which was submitted on time, with a mark of 87% was arbitrarily withdrawn by the assignment department (head of plagiarism). The accusation was that the assignment was copied from someone else's work. The matter was disputed and I was instructed to resubmit the same work for final exam entrance purposes. I was given a mark of 50% for late submission and this affected my final mark negatively to the point where I failed by less than 5 marks. Ever since I had to pay R250 for each supplementary exam which could have been avoided if my original assignment submission had been honoured. my position at work has given me the opportunity to deal with a number of similar complaints from other employees and a disturbing trend has been noted with regards to Mancosa's behaviour. Please assist and advise in this matter