Things happen all the time ... however, under any circumstances, be
professional and be diplomatic.
Make an appointment with your department head to discuss the issue(s). Write
an email to your boss to briefly explain your concerns and ask for an
appointment might be a good way to start because all these communications
can be kept for later use if needed.
Prepare a nice memo to clarify the issues. It is likely that your boss will
help you to draft the memo to be attached to the annual review if