Meal kit provider HelloFresh is being investigated by Te Komihana Tauhokohoko / the Commerce Commission after customers lodged more than 100 complaints in a year.
Commerce Commission general manager of fair trading Kirsten Mannix said they've received 104 enquiries about HelloFresh about a range of alleged problems.
Mannix told Newshub the Commission is looking into whether HelloFresh has breached the Fair Trading Act (1986).
"The Fair Trading Act prohibits false and misleading representations and a range of other unfair business practices," she said.
The complaints alleged a range of problems with the German multinational, such as subscriptions, pricing, customer service, quality, and refunds.
Eighty-two complaints were about subscriptions in particular - that's 79 percent of all enquiries.
"Our investigations can result in a range of outcomes including issuing information or compliance advice, formal warnings or Court action," Mannix added.
If found guilty of breaching the Fair Trading Act, individuals could face a maximum penalty of $200,000, while businesses could be stung with a $600,000 fine.
Mannix said the Commission doesn't normally take action on behalf of consumers.
If customers are having trouble resolving disputes, she encouraged them to contact the Citizens Advice Bureau.
It follows an apology by HelloFresh in January for a "glitch" that saw some customers charged for meal box deliveries they didn't want.
At the time, Caitlin Cherry from Kiritaki/Consumer NZ said some customers were being short-changed, "and it needs to stop."
HelloFresh's refund policy states customers will get a full refund - minus shipping - if they cancel within the required timeframe.
In a statement to Newshub, HelloFresh said it has been in contact with the Commerce Commission but hasn't been provided with the details of individual complaints.
"Our customers are at the centre of everything we do and we are constantly working on improving our service. We are cooperating with the Commerce Commission on this investigation in complete transparency," a spokesperson said.
