Not the same, but related. I wanted to convert to prepaid, as CP's network fees are ridiculous. I sent through everything last year, and they replied that they aren't doing conversions until Dec 25/Jan 26. So last week I sent through everything again, this time they replied that they stopped doing prepaid conversions.
It seems like they are addicted to the sweet-sweet ~R1400 network and service charge. And I don't even have solar at this point, but that will be changing very soon. And then I will probably also just go full off-grid.