Nothing like small people with power over you. I always wonder what motivates people to behave like that but they do. Best of luck, I can't help you or have any knowledge about what to do but I hope you'll get through this. FWIW I was in Canada for a long time waiting for my immigrant status and eventually just gave up.

Yes, very unique and outrageous. I'm sorry you had to go through that.

For everyone, when ridiculous things like that happen, some options are to involve your local Congressional office (often issues like this are resolved when a Congressional office makes an inquiry, particularly on local matters) or to involve the USCIS Ombudsman (which surprisingly often yields positive results).