I'm not going to change the schedule for someone who requested time off too late
Why are you choosing to not give them the time that was requested?
The schedule is already final and I'm not going to change it just because he/she is late for one day.
It makes sense that you wouldn't want to give the time off it they missed the deadline. They should have been more responsible and asked for time off sooner.
I didn't even like the guy/girl, he is so stupid.
It's understandable that the person missed the deadline to request time off. However, you should always be professional when handling these situations. This will insure that you do not lose employees over your personal feelings.