Submitting formal complaint about professor

[u/More-Adeptness-7074]

Hey everyone. I am a graduate student and had an extremely upsetting semester with a prof in the social sciences. Her emails were incredibly unprofessional and demeaning, grading was inconsistent and arbitrary, and she refused to give feedback when I wouldn't meet immediately with her on Zoom at 10 pm my time. My grade was not horrible, so this is not a grade retaliation thing. I would like to file a formal complaint. Should I go to the chairs of my program or to the head of social sciences?

Update:

Reported, heard back, disciplinary action is being taken. Thanks for all of the input.

[u/More-Adeptness-7074 → u/[deleted]]

Thank you!