Some Butterfield Bank customers remain in limbo, with business workers complaining that they still cannot get consistent access to their online accounts.

Commenters on different online forums took a swing at the bank for fumbling what was touted as a systems upgrade.

While corporate customers may be the last of the customers that remain affected, there was also evidence that some personal accounts still remained out of reach late on Tuesday.

Those still affected will hope for better news on Wednesday after two frustrating days for account holders and for the bank.

A spokesman for the bank said at the close of business on Tuesday: “Most customers are now fine and we’re working through the remaining issues in priority order.”

But one furious City worker said that his credit card account is in a shambles and that although he was able to gain access to his online portal early on Tuesday, that changed as the day proceeded.

Troubles began after the 165-year-old Bermudian institution announced an “upgrade” to its “banking systems“.

Butterfield was taking advantage of the long weekend of Easter to make it happen.

It told clients: “Butterfield Online will be unavailable from Thursday, April 6 at 4pm until Monday, April 10 at 9am.”

Before 9.30am on Monday, Butterfield e-mailed customers to “advise that the upgrade to our banking systems has been completed successfully and Butterfield Online is ready for use immediately.”

Less than an hour later, The Royal Gazette received the first complaint.

“While it looks nicer, it looks like they have a problem where payments via debit card are duplicating. I just tried to call and can’t get through on the phone, so I presume I am not the only one having problems,” a customer said.

Technicians were already at work trying to fix the glitch, but even a day later on Tuesday there were still complaints that some businesses were unable to gain access to their accounts.

Just after lunch, the Butterfield spokesman said: “The duplicate transaction issue experienced by some clients has been resolved and customers have not been charged.

“Butterfield Online was unavailable briefly this morning while the team worked urgently to implement corrective measures for other issues identified.

“The service is now accessible again for most users and our call centre remains available to assist clients.

“We remind customers who bank through our app to download the new one because they will be unable to access their accounts using the old one.

“Our new app can be found via the direct links on the ‘Online Banking’ pages of our website: Personal Banking | Butterfield Group.”

Meanwhile, online commenters on popular social media sites ran the gamut of responses, with some finding more success accessing their personal accounts than their business accounts.