I once spent about three hours with MF on a similar situation. The place wasn't closed; they just never delivered my order and, per guidelines, I left after waiting 20 mins then checking the bathroom. They told me just mark N/A. Well that does NOT work because if you say N/A in one place, their form won't let you mark N/A in another place. If you run into that kind of problem, tell the scheduler and don't continue trying the form. I mean, to this day years later, it makes me mad that I wasted so much time on a $3 consolation payment!