I suspect they're withdrawing due to infrastructure issues. We also have frequent power cuts (in my area it's up to 4 hours a day with no electricity) and loads of cable theft. Some of the cell towers even get shut down because people steal the hardware, the batteries that keep them operational. Heck, we've even had cases of people stealing fibre cables, because they thought they were worth more than copper.
*I am a South African living in South Africa.