Nationwide customers were left furious this afternoon after their debit card payments were declined in shops and online.
Some users said their bank account balance wasn't being updated, while others said they couldn't use an ATM.
Outage tracker DownDetector showed the technical glitch started around 1pm today. According to its breakdown, most of the complaints (43%) were to do with online banking.
Some 32% of people had trouble with transferring funds, while 25% complained about mobile banking.
In a tweet to Nationwide earlier today, one customer said: "Is there problems with account balances? I made a purchase but the money in still in my account and hasn’t been taken."
Another said: "I am trying to make a withdrawal from my Sky betting account to my Nationwide account its not going through.
"It is being declined from your side has there been some issues blocking this just I used my card to make a deposit."
A third tweeted: "Any issues with online banking? My account balance is higher than it should be and I can’t seem to make payments online. No messages on the app."
A fourth complained: "I need to go grocery shopping but can’t as my card declining every month there is something new."
Are you having trouble with Nationwide today? Let us know: mirror.money.saving@mirror.co.uk
A spokesperson from Nationwide told The Mirror the issue had been solved around 6pm this evening.
They said: "Earlier today there was a problem with card payments with delays in account balances updating online and some members who are travelling abroad being declined while using ATMs.
"However, this problem has now been resolved, and all transactions are being processed normally but it may take slightly longer than usual for pending transaction to appear in the internet bank or banking app.
"We apologise for any inconvenience caused to our members. No other services were impacted."
It isn't the first time the building society has been hit by technical issues.
Customers saw payments going into their accounts delayed on New Year's Eve - just days after a separate outage in the run-up to Christmas.
Are you entitled to money back for bank glitches?
If your bank services have gone down, you aren't automatically entitled to any compensation - it instead depends on how badly the outage has affected you.
For example, if it made you miss a bill or some sort of payment.
It also depends on how long the service disruption lasts for and how quickly the bank worked to resolve it.
Nationwide has a dedicated page on its website to help you make a complaint.
If you're considering making a complaint, you should gather evidence about how the service issues affected you and for how long.
If you're in desperate need of access to your money but your online services are down, you should be able to go to your local bank branch to withdraw your funds as normal.
If you don’t have a local bank branch nearby or you're unable to get there, try and call your bank or contact it on social media to ask what to do.
