As I was leaving today, she tried this: 'Are you sure you can't work on Saturday?
Gotta love this. "I've said no 15 times already, but come to think of it, I am not so sure at all that I can't work."
Good for you for standing your ground, but I'm angry on your behalf that she would harass you like that. I wonder what would happen if you had said, "No, I've already told you, it won't be possible that evening. Please don't ask me again."
Reminds me of when I was a student and juggling a part time retail job. It was end of term, and I had a study day; I was not scheduled to work, and that was the day I planned to write an entire term paper from start to finish. It was due the following day. I forgot what the actual depth of it was; I just knew I needed the WHOLE day, uninterrupted, and even then it was going to be a killer late night. The paper should have been started much earlier, but I had been PILED down with other work and couldn't get to it - hence that WHOLE day set aside after some other exams. (Oh and work knew of my limited availability due to school).
Cue the phone, which I really shouldn't have answered:
Boss: "Hi, can you work today?"
Me: "No, I'm sorry, but I am working on a paper and I must get it done today."
Boss: "Well Sam called in sick, and it's SO busy. I know it's short notice but we REALLY need you."
Me: "Sorry, I can't help you. This paper is going to take me the whole day. As it is, it's going to take me late into the night."
Boss: "Well if you could just come in for half a shift, 4 hours, that would be better than nothing. We really really need you."
Me: "Working even a 4 hour shift would make it impossible for me to complete this paper. I really cannot work today. Why don't you try Susan?"
Boss: "Susan can't get child care on such short notice. We could let you off by 5 and you'd still have this evening to write your paper."
Me: "No. This isn't just some little homework assignment. The paper needs more than just an evening."
Boss: "Are you suuuuuuure? We're so short staffed."
Sorry but that child care thing really burned my butt. All a person with kids had to say was "I can't get child care" and they were left alone (and rightly so). MY reasons were always picked apart, and assumed to be unimportant. Anyway, I did stay home to do the paper, and even having the whole day, I was still up until 4 AM formatting, editing, fixing, etc.