Ugh, work issues Options

[CaliJeff]

So i get a phone call this morning at 0800 hours "your not at work..." i said i do not work until 1100. They said "no, you work at 0800." so i'm like F***. i shave, throw my pants on, kiss my gf, then race on the freeway to my work. i look at the schedule, and it was edited... i was originally to work at 1100, but sum1 changed it to 0800. I'm freakin pissed. i asked my sergeant about it, and they use the lame a$$ excuse "your supposed to check it everyday". what am i supposed to do huh? call in every single day before the next to make sure they didnt change the schedule on me? is this legal? ugh. thanks for letting me vent guys, let me get ur input !