On the other hand, you may totally hate your job. This gig has been driving you nuts. You feel underappreciated and overworked. No one really seems to care. If that’s the case, resist the urge to (metaphorically) flip a table.
Yes, this situation isn’t good. A two-week notice isn’t required but is typical. Do the best you can and wrap things up. As Tina Seelig recounts in her book, What I Wish I Knew When I Was 20, an employee who was quitting refused to help during a critical time and as a result, “the damage she did to her reputation during the last weeks of her employment dwarfed all the positive things she had done in prior years.” Take the time to wrap things up as best you can and move on.