I don't really think that whether they can or cannot is an issue, it's why they have not already that's at issue.
Cell C has clearly publicly stated many times that the interconnection charges were raised before Cell C entered the market. And, it is blatantly obvious in the current difference between what Cell C / Voda / MTN pays Telkom and what Telkom has to pay Cell C / Voda / MTN for call termination that a massive barrier to entry has been created.
So, why did the Competition Commission not then immediately (when Cell C broke the news) petition parliament for an amendment? I can speculate, but it's pointless.
Right now, the president MUST step up and say that focus must be applied to removing all barriers to promote fair competition.
I find myself wondering: What on earth is going on that is keeping this blatantly obvious and overdue investigation from taking place?