I am probably just being cranky but i would make those 3 weeks the worst dang 3 weeks in their lives. Payback ends with a pair of hockey sticks and they would be begging to make peace with me before the week is out. Don't let them make you a prisoner. Its time to kick but, take names, and burn some bridges. You have just 3 weeks. that is alot of venting to do in just 3 weeks. I would get busy now. I would be microwaving some fish as we type.