Problem with my Professor Unfortunately, I am in a very difficult situation with one of my Professors. In the previous semester, I argued for the grade he gave me in my assignment. I tried to explain him that the way that he had marked me was unfair. He told me that there was no possibility to remark my assignment without giving me more feedback. I felt disappointed and I decided to address the problem to my programme leader. The programme leader told me that an external examiner will be involved. 4 months have passed and I am still waiting. I feel that they tried to cover up this issue. Apart from that, in this semester, the same professor failed me. I feel terrible. I want to drop the programme. Could you, plesase, advise me?
I would advise to first talk to this professor, and ask what you should do differently to get a good grade in his class. Write down his advise, and mail it to him, just to have a written overview of what you discussed. When you understood him correctly, he does not need to respond. When you misunderstood, he might respond to that.

I would refrain from discussing with him whether it was justified that you failed his class or received a poor mark for the assignment. Such discussions will be very unlikely to deliver any result that is positive for you.
Rather focus on what he thinks you need to do now. If you work with that, you are much more likely to get a better grade.

Maybe, you are right, and he did evaluate you unfairly. Maybe not. You can put a lot of effort and energy in trying to proof that you are right, but this will alienate the professor only more.

Life is not always fair. Sometimes it is smarter to focus on how to improve a situation rather than on what is fair.