Dissatisfied with Telkom's Outrageous 31% Price Hike

Telkom decided to implement a staggering 31% hike on my data plan, from R449 to a whopping R651.70. The CPI increase is 5.3%, this exorbitant price hike is unjustified. MTN is offering the same plan - LTE Unlimited 10Mbps plan for just R269. A notable 41% difference. Why is there a significant price gap?