MTN after sales support is beyond useless

If I could have given a 0 star, I would have. I've queried for an paid-up letter on one of my accounts three weeks ago, and still I haven't received anything. I've spent R200+ on their useless call center that has no competent staff, every time I speak to someone they keep on saying no they can't help me and that they'll transfer me to the relevant department, but it keeps on happening. I've been transferred like 12 times on one call, then when finding the correct person the call just disconnected. I wanted to take a new contract, but clearly they only care about sales and no after sale support. Even on their new chat bot, I spoke to a consultant and they advised me to dial 135 then I asked them which options I should chose, to simply get a response of "listen to the options" although the option they gave me doesn't even exist, and had to frustratingly sit and try all options to finally get through to a human. When I told the agent that the option isn't available that they suggested I used and that I'm beyond frustrated, they just ended the chat - I have screenshots, even of all the times I've tried phoning including the times I've spent on calls just for a stupid paid up letter, even when phoning in staff keeps on changing the stories, changing what email addresses I need to email, others saying that I shouldn't email the ones that were provided since it's not in use anymore, this is honestly beyond shocking and I will not be taking another MTN product ever again.