Vodacom Rewards Centre

I have received the WORST service from Vodacom Rewards, I won a prize but had to pay to get my prize delivered and even with payments made they are not delivering they just request more money. It is pathetic and the person helping has over 4 days made so many mistakes which I had to pay for and still I have not receive my prize, the employee just keeps telling me he made a mistake and I have to pay more money to fix his mistake, PATHETIC!!!!!