I've found I've been overcharged on three separate occasions in the last fortnight, but only on reaching home, necessitating a return to each shop. All three coughed up without a murmur and in two of the cases - involving two different supermarkets (one beginning with A and one beginning with T) that had charged for two bottles of wine when I'd only bought one, they paid up without any proof whatsoever that what I was saying was true. In the third case (involving a clothing store), they'd failed to remove the saving promised on the labels and merely taking back the labels and receipt got me the refund. However - if I hadn't spotted these 3, I'd have been 15 quid less well off than I should have been. I'm principally concerned by the till clocking up two of one item at the supermarkets, because if it happened to me twice in a fortnight, how often is that happening to others on a daily basis? Anyone else got similar experiences?