I made a formal compliant with the Human Resources department at my company. A senior level manager made a racist remark to me in front of other employees. The HR department said she admitted it and said she was just joking. They claim they had a talk with the person and then closed the case. They are refusing to provide me a copy of the compliant that I filed. They told me that they will not provide any documents without a Subpoena. Are they allowed to do this?