There's a shortage of subs in my area, so I posted my absence on Aesop 8 days in advance to hopefully land a sub. Well, I did, and quickly. The sub held the job until yesterday. Out of nowhere, a week after holding onto the job, she cancelled. It defeated the whole purpose of my posting early. I was so relieved when another sub picked the job up this morning. And now, at 11 pm the night before, she has also cancelled. It's getting frustrating to have subs cancel so often. I'm having a baby later this year so I hate thinking that this is how it'll be every time I have an appointment. Does this happen at your school?