Problems with nr- to be ported.

I have moved from using a prepaid sim-kaart with Telkom mobile to a contract with Telkom mobile.For the past 6 months I've been phoning customer care on nearly a weekly basis. I need my nr to be ported due to the fact that I am running a bussiness in which my prepaid nr is central.As a result I am still using my prepaid sim card and the contract has been useless since the start. The closest telkom outlet to me is in Port Elizabeth nearly 140km from me. Every time I contact the service centre they tell me that the change is going to happen in 48 hours!Still nothing has happened in 6 months time. Best regards Jacob Francois van Straaten.