A problem with Westpac Bank's computer system had many of its customers scrambling to use non-electronic means of paying for their shopping this morning.
Supermarkets reported that Westpac customers were unable to use their credit cards or eftpos cards and Westpac atms were also not working.
Lower Hutt Countdown supervisor Vaishali Vakhari, said customers who tried to use their cards received a message saying "invalid transaction".
They had to go to another bank's atm to get cash to pay for their groceries.
A shopper told The Dominion Post she also had the same problem at the Queensgate Farmers store.
A Westpac spokeswoman said she was unaware of the problem.
The bank had a similar nationwide outage last month. It was attributed to a data connection problem.
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