I know; it's the sort of thing that if someone told me, I just would not believe them. This is such basic crap that the idea that some production till could get

I know; it's the sort of thing that if someone told me, I just would not believe them. This is such basic crap that the idea that some production till could get it wrong seems inconceivable. They could have that £1.50 back if they could give me an explanation! =)