Call centre staff not very knowledgable

I needed to convert my contract to prepaid (a few months after my contract period ended so I had been on a month to month basis for 4 months). I asked the call centre agent to convert my number to prepaid and he said he would sort it out. The next day, my number was cancelled! I called Telkom again to get my number reactivated and each time I call (even after speaking to the Team leader) I was told it’ll take 24 hours to reactivate the number but 24 hours later, it’s still cancelled. And then this cycles repeats - I call, get told the previous agent didn’t reactivate it, the new agent says they did it now and says to wait 24 hours, then 24 hours later it’s still inactive. It has now been over a month and my number is still inactive! I give up.