TSB has said it has resolved all the issues resulting from its payments glitch today.
Problems left some customers without wages in their accounts, after overnight payments failed to go through.
To help, TSB said those affected could contact the bank, by going into branches or by phone. It added customers could use their cards to make payments or withdraw cash.
A TSB spokesman said: "Some payments into TSB accounts have been delayed overnight and we are working to process these as soon as possible today.
"We apologise for the inconvenience this has caused and will ensure customers are not left out of pocket."
It is understood the error was caused by a processing delay.
Gareth Shaw, head of money at consumer group Which?, said: "It's beyond belief that customers have experienced more problems as a result of yet another IT glitch from TSB, hot on the heels of a damning report into the bank's system failure last year.
"With banks increasingly trying to move customers online, these IT glitches are still far too common across the industry, and it's clear that people need access to cash as a back-up.
"The next government should intervene with legislation that protects access to cash for as long as it is needed."
It's the latest glitch to affect TSB, after a major IT meltdown last year left close to two million people locked out of their accounts. The problems also sparked an unprecedented wave of opportunistic fraud attacks on TSB customers.
The debacle led to former TSB boss Paul Pester stepping down.
New chief executive Debbie Crosbie is due to update on her strategy overhaul at TSB on November 25.
