If your job makes you want to kill yourself, and you have another job ready to go, then by all means QUIT!

Just remember you might have to use them on future application so maybe you should try to be cordial

They are awful to everyone. That's why everyone quits. But thank you. I will wait till Wednesday (next Wednesday) and tell them how I feel

Wait til you get your check...then tell them what you think of them. Getting that anger and frustration out on them might help. Tell them how they've made you feel. It will give them pause for thought. Although they have made you suffer in the most awful way they may think twice about doing it to someone else. My prayers are with you x

She doesn't give anyone a good reference who quits.