Cancellation Procedure taking forever.

I joined VHI on the 20th January in Witbank and when I got home and thought things through I decide to cancel the membership as I saw that the terms are ridiculous and some of the things stated by the agent was not as they were on the contract. so I called him the next morning to say I have decided to cancel but still today he had not picked my phone and had not rep**** to my messages. I send my letter to their offices in Cape town with my proof of payment as per cancellation clause and did that within 48 hours. When I call the offices its always a story and no one is telling me if they had received my documents and are processing my cancellation request. Taking my money was quick but when I want my money back no one is willing to help. No communication whatsoever from them to say they had received my documents. I want my money back. I did as required so what is the hold up???