Hey Ralph, I would have been p*ssed too. But I would have tried to be as resourceful as possible, to the point of soliciting a couple of patrons if necessary. Or used my 'twin' at another cashier . (I don't know how big this place is, so it may not have worked). Too many times I have thought what I 'could have done' but didn't on the way back. So before I leave from an impasse, I try to get real creative.