Customers of the bank of Ireland were hit with a debit card glitch on Thursday that left them unable to withdraw money or pay for goods.
The problems were exacerbated by the fact that holiday season has arrived, meaning that several bank customers were left unable to use their cards while abroad.
According to the bank, one in seven customers were affected by the problem which it says has now been resolved.
The problem attracted fierce criticism from consumers and politicians. "Bank of Ireland is leaving customers high and dry again as ATM and point-of-sale transactions are failing for some," said Sinn Fein TD Pearse Doherty.
"There are reports of Irish people abroad who can't pay hotel bills and are now in danger of missing their flights. Sort it out. This is happening all too often."
The Bank of Ireland incident follows the recent outage of the Visa payment system which affected cardholders across Europe earlier this month.