Central Board Of Secondary Education [CBSE] — I'm complaining about in charged mam of class 9th

Address:

D.A.V. Public school, Pushpanjli enclave, Pitampura

On date 13th march, 2021 in chrged mam of D.A.V. PUSHPANJLI was insulting student very badly. She made joke of student in front of class.
On that day there was 9th maths class paper. I have completed my paper in 2 hour 30 minutes. She started saying why are you not writting. You have keep writing 3 hrs and she also says that if you don't write the paper I will give you 0 marks in maths. Please take some action.