gandalf456
I haven't misunderstood at all
Then why are you still asserting that I said that leaving entire trolleys of shopping at the till happens every day?
Not only have I not anywhere said nor meant that, I have just explained it to you longhand with full reasoning and examples.
Probably you are not misunderstanding, but I do like to try to see the best in people 
but you are doubting my personal experience.
Nope, I am not doubting your personal experience, nor have I said that I am. I have said that you have written things which are untrue, such as that it is nobody's job to put left shopping away, and that I have said things that I provably have not.
I've worked in a supermarket for 11 years (and various customer facing roles prior to that)
My customer facing time probably equates to yours, give or take, including supermarket cashiering, and I doubt you could surprise me with stories of bad customer behaviour. Not only do I not doubt you, I have seen plenty. I have also seen good customer behaviour, even when making complaints!
I've yet to hear of someone politely leaving an entire belt of shopping. The two don't collocate, do they? How would you do it politely???
I did when I forgot my method of payment (but thankfully not my new baby) and I was certainly a whole lot less rude than several of the staff. I did feel a fool, however sure, if I had felt more righteous indignation I might have responded differently to the sneers, raised eyebrows, tutting and acidic comments about having to put it all back. I am sure your experience must include staff who do not behave as they would like others to, and it does work both ways.
I know several people who could leave an entire trolley load in protest without being offensive. I probably know more that could not even if they wanted to.
I suggested it as a peaceful protest, so yes you would get people who like to be abusive doing it to join in and have an excuse to be abusive, and the full spectrum to the people who felt abused and helpless and let it out as anger before but now had a non-abusive outlet for their frustration. I imagine flouncing would be common.
Also, you weren't ....blah blah blah crap calling me a liar
I said what I said and meant what I said, you chose to interpret it the way that let you respond how you wanted to, and are now trying to cover.
And I think abandoning a weekly shop for one or two declined items is far more 'Daily Mail' and emotive than what I have written.
Not sure about that meaning of Daily Mail as I don't read it, only that it has people on MN trying to stir up stories with lies and hyperbole.
Personally I doubt I could manage to be as emotive leaving a trolley of shopping as you were in stitching me up for things I didn't say. We are clearly very different people.