Can't sign a contract on the existing number?

I want to sign a cellphone contract on my existing prepaid Vodacom number and have been to 6 Vodacom shops yesterday, none of them knows how to do it! I called the call center this morning and one of the agents told me that only certain stores can do it because my profile is on the new 3D system. I went to Canal Walk shop again earlier but I've been told none of the shops are able to it!<br> <br> After 6 shops visiting and call transferring between the call centre agents, I found that I got different responses from Vodacom every single time. No one is able to give me a proper response.<br> <br> I wasted the whole weekend and Vodacom still can't give me an answer. I would rather change to another network, sign a contract and keep my existing cell number. Can't believe Vodacom who advertised as the best network in the country is not able to provide the basic service that all other networks do!