Spark says its customers have been contacted by fraudsters claiming to be from Spark.
The fraudsters are reportedly telling customers that their Spark services are about to be cut off because of security issues and then asking the customers to go online to a fake Spark webpage.
Customers are also being asked to give remote access to their computer and provide personal banking information as part of this scam.
These calls are not from Spark and Spark strongly advises anyone who receives one of these calls to hang up immediately, the company says.
"It’s very important the customers do not hand over any personal banking information and do not proceed to the fraudulent webpage. If anyone has passed on information, Spark advises them to contact their bank immediately."
The fraudsters do not have access to Spark systems, the company says.
How does a customer know if a service call is for real?
"While we do make service calls from time to time, we would never ask customers to give us their banking details, and the only webpage we’d ever direct them to is ours – spark.co.nz," a spokeswoman tells NBR.
"We would also never ask for a customer’s MySpark password if we’d called them out of the blue –the only time we’d ask for personal information (to verify their account) is if they called us about a problem. That is, it would be customer-led."