Why? Never, ever, happened before. And why now??
And why at Big-C Mini, but NOT at 7-Eleven. (She actually paid the bill at 7, with cash).
Very, strange. Just a mistake by un-trained staff. Or ... or ... something more sinister? That's why I posted here trying to understand if this is a one-time thing, or the early start of a pattern.
Not asking for speculations or wild guesses that we see on other topics on public forums. Only asking if anyone else has seen similar. Is this one data point in a trend?