Pathetic customer service from Vodacom treating customers like they are *********!!!

I am so so dissappointed with Vodacom, I have been a customer for over 8 years now and I am due for an upgrade! I have been paying my account every month and now that i want to upgrade my score is a bit negative at itc due to other circumstances Vodacom won’t allow me to upgrade!! My account is over R2500 at vodacom i want to upgrade so that I can pay less than R2000 and they still reject me!!! What is my other accounts to do with Vodacom?? I have been paying my Vodacom account in full each and every month and they treat me like a ******** now!!! Both my accounts is R2534 together i want to go to a package where I will pay for both less than R2000 but NO Vodacom say that I can’t!!! It is so so pathetic from them and I will bad mouth Vodacom wherever I can, Facebook, Instagram and I will do it every week so it can stay fresh!!!!!