Vodacom strikes again

This seems like de ja vu. Battling with Vodacom is a common occurrence. I want to port a pay-as-you-go number to a new contract I've already taken out. They simply say it is not possible. Firstly, I cannot understand why it's not possible and secondly, when I app**** for the new contract they did not ask me about a number, they were just too happy to take my money. The contract has not been in use yet as I was waiting for the previous contract to end so that I can port my number and use the new contract. Vodacom's reluctance to even try and help is typical of their bad service. I just don't understand why they cannot unlink the one number and link the other number. They just don't want to help or don't care. Other option is that they cancel the contract and just give me a new contract. Oh but wait, I have to pay cancelation penalty. They just don't want to help, they just want to take our money. Pathetic as usual!