Thousands of Nationwide building society customers have been hit by a major banking blunder.
They were sent new debit cards that didn't work. The issue affected people who were sent replacement debit cards for cards that are due to expire at the end of this month.
The replacement cards were posted on May 30 and May 31, meaning customers should have received them last week. You can normally start using a replacement bank card straight away - but Nationwide admitted that these cards weren't activated until this week. It means that customers who tried to use their new card last week found it didn't work.