gave them 3 weeks notice for it. They didn't respond to that message in any way, so I mentioned it in the next meeting, where they brushed it off as ok. THE DAY I LEAVE, I get a text asking when I'll be back, and if I can call them. I don't respond because I'm on vacation. They then email me a giant, wildly exaggerated list of complaints with my performance that they could've brought up before I left, and DEMAND to know how I was going to fix them. I don't respond because, again, I'm on vacation. The next day, my boss texts me, demanding I call him later that day. I don't. I'M ON VACATION MOTHERFUCKER. He texts me that night, saying he "doesn't enjoy doing this" and then fires me with a text.

This is insane. And in any country(except USA) this will fuck them much harder than not having permit. Even firing on vacation is illegal. And "wildly exaggerated list of complaints with my performance ... and DEMAND to know how I was going to fix them" on vacation likely will bring even more trouble.