Westpac's on again, off again online banking Westpac says it's working to restore full online and mobile banking services. Westpac online customers have found themselves unable to access their accounts for a second day, as the bank confronts technical issues. Customers were locked out for part of the day on Thursday, before services were restored on Thursday night, only to become unstable again on Friday. The bank said it was in the process of restoring customers" access to internet and mobile banking, ""although a small number of customers may still be affected"." The bank's ATM network, branch network and phone banking systems are not affected. In a written statement, the general manager for Westpac's online Australian financial services, Harry Wendt said: "Westpac sincerely apologises to all our customers who have been impacted by today's interruption and thank them for their patience."" Earlier a bank spokeswoman said the service had been intermittent, working for some customers, some of the time. Yesterday it was down, today some customers have been able to log in and others haven't. Some customers are experiencing a bit of a slow service, a small number hasn't been able to log in at all. The bank said it was investigating the source of the problem. The bank had not done any technology updates or refreshes lately that could have caused it and there was no evidence to suggest any malicious cyber activity. "The team is currently investigating the issue and working to restore full service as quickly as possible," she said. Westpac's social media team has been working overtime to respond to a deluge of complaints. Twitter user Darren Cain said: ""just got an SMS reminding me to pay my account. Bit hard to do when online banking is down"." Westpac said its customers would not be hit with any fees as a result of payments missed because of the outage and advised people to contact their local branch on 132 032. Although the bank said only online banking systems were down and all transactional systems were operating as normal, some customers said on social media they had not received their wages because transactions were not being processed. Sarah Fleming said: ""Can't even go out for dinner tonight because I can't get paid!"" Several people on social media said the outage was making it difficult for businesses to pay employees' wages. Jay Gordon said: "On my way to @westpac branch with a list of 60 names, bsb's, account numbers and $$$. Payroll like it was 1945. A Westpac spokeswoman said that its branches were assisting people with payroll problems and had hired a third-party to speed up the transactions. Despite the bank's promise to waive fees for affected customers, some were still reporting being hit with charges. @nkouta said: "$7.50 for a statement so I can get my Taxes done when ur system is down and I can't download them myself...wake up to yourselves." The bank said it would refund charges. Update 4:14pm: The bank says services are fully restored, but customers continue to complain about not being able to access their accounts online. With Lia Timson