SANTANDER can usually log on to their accounts online and via the app to keep an eye on their cash.
But Santander customers have struggled to get into their accounts as internet and mobile banking services went down.
If you're a Santander customer who is affected by a website or app outage, we explain what to do - and whether you're due compensationCredit: AlamyMore than 600 customers were unable to use mobile banking or log in to their business account on the web for payments today (Thursday, February 1).
According to Downdetector, 55% of customers are unable to login on their mobile app, 34% can't login to their business account on mobile while 11% have been left without access to personal banking on the internet.
Here's what you need to know about how to check if Santander is down, and whether you're eligible for compensation from the outage:
Are there illegal baby names? Surprising monikers that are BANNED in other countries, from Sarah to ThomasHow can I check if Santander is down?
Santander has a dedicated page on its website which shows if any services are affected, including mobile, online and telephone banking as well as card payments.
The bank also regularly updates its social media so Facebook and Twitter are worth checking for live updates.
You can also check websites such as DownDetector, which will tell you whether other people are experiencing problems with a particular company online.
Can I claim compensation for outages?
Unlike telecoms companies, banks do not have a fixed compensation scheme for service disruption, although depending on how much it has affected you, you may be entitled to some money back.
It is worth gathering evidence of your problems so you can make a formal complaint to Santander directly.
Try to make a note of when you were unable to access the website or app, plus any costs you incurred as a result.
If your credit rating has been affected by a service outage, because you got a late payment fee after being unable to make a transaction, for example, you should also keep a record of this.
If you spoke to anyone to try and resolve the problem, make a note of their name and when you spoke to them, as well as roughly what you discussed and what they advised you to do.
You can find out more details about how to complain to Santander on its website.
What happens if Santander refuses to compensate me?
If you’re unhappy with how the bank dealt with your problem, you can contact the free Financial Ombudsman Service (FOS).
All about Rachel Nickell who was murdered in front of her son Alex HanscombeIt is an independent body which will look at the evidence you present, and make a fair decision about the action a bank should take.
The FOS can usually get involved 15 days after you’ve raised concerns with the bank.
In the case of an IT system outage at a bank, the FOS says any compensation depends on your circumstances and whether you lost out as a result
If it thinks you did, then it has the power to tell the bank to reimburse any fees, charges or fines you were hit with, for example if you were unable to make a payment for a credit card bill or to your mortgage provider.
It could also tell a bank to pay you for any money you didn't receive, such as interest, if you weren't able to pay money in.
If your credit score was affected, it may tell the bank to correct your credit file.
The FOS might also tell the bank to reimburse you for any extra costs you had to make, such as phone calls or trips to your local branch, as well as a payment for any inconvenience it caused.
Santander has over 14.4million customers in the UK.