So, I work for a pizza company. The schedule came out on Sunday and I was 10-6 Friday and Saturday. Sweet! Happened to glance at it the other day and my shifts changed on both days to 6-11. They did not tell me that the schedule has changed/asked if it was ok. 

I could technically do those shifts, but out of principle I don’t want to. Still haven’t decided what to say to my boss, or if I should just turn up at 10am on Friday. WIBTA if I did that?