Surprise, surprise
Have you ever been told at Macdonalds that, "Sorry, we don't have any hamburgers today?"
Probably not, but something similar happened when I went to Subway's on Nanjing East today. I was told that "Sorry, we don't have any bread today." I could have had a salad, though -- maybe that's what they did with the stuffing since they didn't have any bread.
But I wonder why a sandwich place without bread would even bother opening their doors.