NatWest customers unable to make purchases or withdraw cash due to computer glitch Some customers of the U.K.’s National Westminster Bank (NatWest) were unable to make store purchases or withdraw cash Saturday afternoon thanks to a glitch in the bank’s computers.A NatWest customer service representative said on Saturday the problem affected all the bank’s customers, but a spokesman Monday said the incident had been less severe.“On Saturday afternoon, for a short period of time, some customers might have experienced delays in their cards being authorized,” said NatWest spokesman Nigel Owen. “The glitch was quickly rectified.” He declined to provide any further details.One customer was in Paris trying to buy a pair of shoes when his card was denied, and he was also unable to withdraw cash from a bank machine. “It’s a good job I wasn’t in a restaurant paying for a meal. It could have been embarrassing,” said Philip Forster, an art director from London.The problem lasted about an hour, he said. He was told by a customer service representative that all customers were affected. Banks typically buy expensive, high-end computer systems and software to guard against unplanned service interruptions. Software DevelopmentTechnology IndustrySmall and Medium Business