Its their 'policy not to sell more than 8 of anything' dontcha know
'depletes the shelves'
BUT BUT BUT
they assured me that i could phone up and p;ace a 'special order' next time
i assured them as i plonked the extra four boxes back on the counter that 'life was too short for special orders and next time i would go to Sainsburys where I can buy 26 boxes without anyone turning a hair'