LTE contract declined because of a telkom system i

I app**** for the LTE uncapped option @ R599 x 24 months as I was part of the first 50 subscribers in the area. I have done the application telephonically but got declined due telkom mobile systems showing an outstanding balance on my fixed line account of R1148.13. This has been settled a while back and has been updated and confirmed by the billing department. So why decline my contract? It seems as if Telkom does not want my business. Its impossible to speak to a competent call centre agent or team leader as none of them commits to their promise of getting back to me. I am unable to get this deal from a telkom shop as they do not have this special available. How **** can customer service be. I want this resolved asap.