Bad Service

I have three contracts with vodacom, which I have never missed payments on, I am currently under debt review which from what I understand cellular contracts do not enter into unless they are in arrears, which is clearly not the case.

I attempted to upgrade my contract at an Incredible Connection store and was denied due to a credit limit error, I then called the call center and was told that my account was flagged by the credit bureau.

How can my account be flagged yet it is not under debt review, even my debt counselor advised me I should be able to upgrade with no issues as my Vodacom account is up to date.

How is it credit when I am paying for a service that includes a device, vodacom has done this to other people as well and it is really embarrassing as well as demoralizing when your payments are up to date but you're denied an upgrade. I just want a simple upgrade to the device of my choice.