Any victims of a scam on New Zealand's biggest telecommunications company are unlikely to get any money back.
Spark has set up a hotline following reports that scammers claiming to be from the company are calling customers to get control of their computer and bank details.
The company says customers are being called by someone saying their internet connection will be cut off because of security issues.
The scammers then lead victims to a website where they are asked to download software that gives the scammers control of the person's computer and access to their bank details.
Spark spokesperson Richard Llewellyn said the company, which recently changed its name from Telecom, never rung its customers out of the blue.
"We'll only ask for personal information if you call us, so if you do receive a call from someone claiming to be from Spark who asks you to enter your bank details, we do encourage you to end the call immediately and contact us," he said.
The Bankers Association says banks will usually do all they can to help scam victims.
However, deputy chief executive Karen Scott-Howman said they are not obliged to reimburse customers that fall for the scam.