Rajasthan Technical University — Unfairly marked in Internals

I am sonali kumari, a student of school of aeronautics (B. Tech - a. E) of 2017-21 batch. I've been marked unfairly in internals as they marked me zero when i already saw i passed with good marks in that particular subject.
Now when i talked to my director, principal as well as exam department, they firstly, blamed each other and now they are not even replying any of my messages, calls or emails. No one is willing to take any action. Neither they are showing me my answer sheet nor they are willing to check for themselves.
I am very depressed as i don't have any back till my 3 years of college. Please help me. Looking forward for your reply.
Thank you