Nationwide Building Society has been hit by an IT glitch, with many of its customers flocking to social network Twitter to show their frustration.
Chelsey Strode tweeted "thanks Nationwide for being a massive inconvenience", while Chloe Fitzgerald tweeted "how long do you expect to be experiencing problems Nationwide? This is a joke now! #unhappy customer".
Further reading
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The @AskNationwide Twitter handle has been responding to many of the customers affected, but have so far not been able to give further information on when the IT issue will be resolved.
"We're not sure of the current timescales but hope it's fixed ASAP," Nationwide tweeted in response to an angry customer.
The issue is affecting online banking, mobile banking and online payments.
In a statement sent to Computing, a Nationwide spokesperson said: "We are currently experiencing an IT issue affecting our online bank. Customers can still use ATMs to withdraw cash and check their balance and our branches are open to deal with our customers' needs."
The spokesperson said that the building society was attempting to resolve the matter but gave no further information about the problems involved.
The Nationwide service availability page had stated that outgoing and ingoing 'Faster payments' have been delayed, will be queued and processed "as soon as possible".
Banks have had many issues with their IT systems in recent years. In June 2012, millions of NatWest and RBS customers could not access their accounts for a week, while some customers of Ulster Bank were affected for weeks. The problems cost RBS Group a total of £125m to fix, including compensation payments to affected customers.
(Update 16:45 on 23 April: Nationwide service availability page states that all services are operating normally).