Upgrade me, Vodacom!!

Vodacom is giving me the runaround. I want to upgrade my phone to the iPhone 11 Pro and then Vodacom tells me I’m not eligible to upgrade to that phone due to whatever reason on my profile. I have zero debt to my name, save the contract I have with Vodacom. They even told me to go to Transunion to sort out stuff. I called Transunion and Experian who then told me I have nothing alarming in my profile. And that Vodacom should be telling me why I’m not eligible, which they didn’t. Now I’m at my utmost level of irritation because I can’t upgrade to something I want and Vodacom is useless at telling me why. No information is given, I’ve been calling them every hour of today, various requests have been raised where I haven’t been updated in any of them, resulting in me having to call several times for a progress report. This is very much embarrassing and has never happened to me before. What on earth will it take to get this resolved?! At this point, I’d rather switch to MTN to get the upgrade I want, the level of service with Vodacom is shocking.