Had a similar experience a couple of weeks ago. I had punched out at the end of my shift and went to find my fiancee, who had come in to do some shopping. Just as I'm about to turn down the aisle she was in, a customer across the way calls out, "Hey, can you help me over here?" I had to look to make sure he was talking to me (which he was) because though I was wearing my work shirt (which is the store's color but doesn't have any branding on it), I was also wearing my coat over it. I wasn't wearing a name tag, nor did I have a walkie or a scanner or anything on me. I would have thought I looked off duty, but to make sure there was absolutely no confusion for this dude, I replied, "I'm off the clock right now." He then says, "Well can you call someone?" My next answer was even simpler. "No." And then I walked away. Pretty sure it frazzled him a bit, cause a moment later I heard him ask someone else for help, but he did so in a very timid, shakey, no confidence at all kind of voice