she just asked me to go to a meeting in Bracknell (i live in london) on saturday morning - at 8fucking45! Im just a temp, and am filling in for a colleague who has just retired, until they find a permanent replacement.

how dare she ask me to give up my saturday?

obviously i'm gonna say no, but do i say "how dare you ask me to give up my saturday" or just lie and say I'm busy?