Upgrade

I have been a loyal client of Cell C for many many years already. Account is well paid.. no issues at all. I went on debt review many years ago and I am now battling to get the letter that I am off debt review. I am now due to upgrade and it was declined due to debt review. Every other upgrade I was approved even with debt review status. I have read il and this is not a debt contract but a service contract and I can upgrade. I can understand if my account was poorly conducted that I would be declined. This is absolutely shocking to treat a loyal good paying client like this.