It's wrong to ignore your boss's calls to you.
Anna is tired and sick of her workplace.
Anna wants to have a day off.
Anna called and left a message that she was not going to be in that day.
Anna does not call anyone to tell them she is not going to work, she ignores the calls from her boss.
When he boss called, Anna answered, and they determined if she would use personal or sick time off.
Anna is terminated the next day.