@nixCraft @megatronicthronbanks I pulled a similar trick with a Centrelink manager about ten years ago.
Me: Did you open the zip file I sent?
Him: Yes
Me: I don't think so
Him: Are you calling me a liar?
Me: Yes, the zip is password protected and I have not given you the password yet.
That humbled him and I got my way. Forget what it was about now, there has been so much fuckery over the years.