Mobile provider 2degrees is offering customers free calling and texting to say "sorry" for a fault causing widespread frustration.
Customers have struggled to contact 2degrees and use their services to top up, check balances and manage plans over the past few days due to a fault the company said was caused by "internal systems upgrade" earlier this week.
Until 6am tomorrow, all standard calls and texts from 2degrees mobiles to local and Australian numbers are free, while the company continues to sort out the issue.
"We've been doing everything we can to sort issues and I know how frustrating it has been for customers who haven't been able to get hold of us so they can top up or buy value packs," said 2degrees CEO Stewart Sheriff.
"By making mobile calls and texts to New Zealand and Australia free today, we're saying we're sorry for the hassle this has caused and thanks for bearing with us."