Upgrade **** with Vodacom

On the 27th November 2020 I went online and found a deal that I liked and decided to upgrade my daughter's contract which is on my name, I then received an email just after saying that they will let me know as soon as a credit check is done. But usually with an upgrade especially if it's a lower package there is no credit check. Anyways I have been trying to contact Vodacom since the 27th and have had no luck speaking to an agent with a proper answer, they always put me on hold and then I have to answer a survey and the call gets cut. Today on the 4th December 2020 I eventually got hold of someone from vodacom who advised me that the system changed my application to a new line and declined me. I questioned her about it and she says there's nothing they can do it was declined and I cannot get that deal. They always phoning me to upgrade my contract and when I eventually do decide to upgrade their system is messed up. I want that contract deal and I want a manager from vodacom to contact me regarding this issue.