To date, the National Consumer Commission (NCC) has received 32 complaints from Vodacom and Cell C subscribers, who claim the network providers are acting unfairly.
There had been no complaints lodged against MTN.
In a move to further address consumer-related complaints in the telecommunications sector, the NCC and the Independent Communications Authority of SA (Icasa) signed a memorandum of agreement on matters of co-jurisdictions and common interest last month.
Acting Icasa chairman Rubben Mohlaloga said the joint venture with the NCC would improve referral processes thereby facilitating a much quicker response to consumer complaints.
During April, the NCC learnt through media reports that some mobile network service providers were proposing call and data increases to consumers.
The NCC claimed that the proposed increases were reported to also affect consumers who were already in the middle of fixed-term agreements and contracts.
