If you’re paid minimum 5 hours, and you get sent home six hours in - then you’re gonna moan. I would. That’s five hours pay for six hours of work, plus the commute to fork out for on top. Not good, unless it’s an exceptionally good job with exceptionally high hourly rate (not likely!)
If you’re paid minimum EIGHT hours though? - All you’ll see of me is the door flapping closed. 
Six hours of work for eight hours of pay, and no meal break deducted neither. 