Okay so this probably isn't the best place to post this but I (18 years old) don't know where to else to post for advice, but my kitchen job scheduled me for two shifts tomorrow from 11:00am-3pm and 5pm to 11:30 pm, except I am a college student and set my availability to be nights only for a reason, so not only do I not have the stamina for this long of a shift, I am not able to work so long for a reason, and when I tried talking to a manager about it she basically just waved off my concerns so I don't really know what to do? If I have to work this I won't be able to go home from 7am (the time I leave for class) to almost midnight.
Can someone give me some advice? Would it be a good idea to call in sick?