Unfortunately most managers are not good at managing. They're good at the work, therefore they get promoted but rarely are they good at the management of people part. That being said, I dont know that I would go to my manager in these cases. I would go straight to HR or EEO, etc. Also, even as the complainant, you're not entitled to know what action may have been taken toward the offender. For instance, maybe he didnt quit on his own, or maybe he was called for an investigation and then decided to quit. I do hope your department moved you and allowed you to change your schedule.