Probably a good idea for your inept PM to stay away from angry customers. Who knows
what baseless, clueless thing she might say.?
PM apparently doesn't understand what constitutes a threat. I guess a pipe bomb in the mail box isn't threatening, because the bomber didn't rush you with a bomb.
I'm glad you've gathered evidence, produced a statement, filed a grievance, talked to someone in law enforcement, notified all the proper honchos, and removed yourself from daily contact with the misogynistic Neanderthals.
Peace to you and your husband.