It pays to be on the ball you know.....to keep a tag on your expenditure especially when you go out shopping at the local supermarket.
At least in down-town Wolverhampton England.
The story goes that a guy went into his local Asda supermarket, did his weekly grocery shop & paid for it with his bank debit card. No problem then.
The following month however he received his bank statement thru the post & noticed that on that shop he'd been charged £450 for one thick sliced wholemeal loaf of bread!!
Fortunately he was successful in obtaining a refund...but he'd eaten the loaf!