"We disagree with the charges laid by the Commission and welcome the opportunity to defend the naming and marketing of FibreX and reinforce the benefits of this service," the telco said in a statement.
"We had a vision to provide consumers with an alternative way to receive super-fast reliable broadband that would also be more affordable and offer a better installation experience. We delivered that through a significant investment in our own hybrid fibre coaxial (HFC) network. "
The company said its investment in this infrastructure is good for New Zealand and offers consumers more choice.
"We are surprised the Commission does not appear to welcome that," Vodafone said.
Vodafone countered claims that its advertising misled consumers.
"In 2017, the Advertising Standards Authority looked into our advertising of FibreX and ruled it was not misleading," Vodafone said.
"They noted that consumers are more interested in the speed than the technology behind their internet service, and that FibreX performs to a comparable standard to other fibre access technologies."
Vodafone said its service offers an alternative to a major customer pain point, which often comes in the shape of consumers having to wait for installation.
Vodafone said it would challenge the charges made by the Commerce Commission.
This matter will be called in the Auckland District Court for the first time on May 22 2018.