The first step is to try to resolve issue with your professor directly. If the issue is not resolved, you should speak with their respective department chair. If the issue is still not resolved after speaking with the department chair, you should write a letter and submit it to the 临时副院长, Mayur德赛. If the matter is not resolved at that level, 临时副院长, Mayur德赛 will take further actions to get the issue resolved and notify the student with the decision that has been made.