There are too many reasons why Ginger Beer's story does not ring true. If the story as related, had even a grain of truth in it, the media would have jumped on it like a pack of wolves. With so many people dumping their shopping and walking out, wouldn't at least one of them have gone to the media. And as someone else has pointed out, the particular branch of Morrison was not identified. Why? Too easy to check the story??
In any case, for what conceivable reason could the Manager justify the till operator not serving this person. Unless the shopper was abusive (in which case Ginger Beer should have mentioned it), I doubt that there is any legitimate reason for the till operator's actions. If on the other hand, the story IS true........................?
Submitted before seeing Nutloose's contribution. The plot thickens.