The punnishment must match the extent of the crime. In reality Telkom has abused its dominance and caused more than R3.5b in damages to all of its competitors and consumers. Telkom needs to be split up to separate wholesale from retail, such that the retail entities within Telkom are sold and have nothing to do with Telkom wholesale, if the fine is imposed, it will likely force Telkom to split of its own accord in order to survive, I do not see Telkom splitting voluntarily under any other conditions.
Considering that the R3.5b fine goes straight into government coffers (Treasury Department) and that government's shareholding in Telkom is not likely to generate profits like R3.5b in the foreseable future, I suspect the gravy train regulars will throw their considerable political weight behind imposing this fine.