The Australian Communications and Media Authority (ACMA) has formal warnings to Activ8me and Sure Telecom for failing to make critical information summaries available (CIS) available to customers.
The requirement is part of the Telecommunications Consumer Protection (TCP) code and allows consumers to more easily compare telco plans on a like-for-like basis.
The summaries have been a requirement of the TCP code from 1 March this year. It is the first ACMA has taken enforcement action around the CIS, but both companies have moved to comply with the TCP code.
"The ACMA expects industry compliance with the TCP Code," Chris Chapman, ACMA chairman, said in a statement.
"Where we see non-compliance and bring that to a provider's attention, we expect a rapid response. In most cases, that has been forthcoming. Where it is not, we will not hesitate to use our formal enforcement powers.
"The industry has known for eight months that these requirements were looming."
ACMA carried out an audit of 90 CIS from 49 providers in March and says compliance is widespread across large and medium-sized providers.
ACMA will assess CIS compliance in 20 smaller providers.
Follow Stephanie McDonald on Twitter: @stephmcdonald0
Follow Computerworld Australia on Twitter: @ComputerworldAU