Vodacom service

I am sending this to lodge a complaint about Vodacom and their service. I went there to South Coast Mall Shelley Beach to open a new contract. I already have a contract with them but my application was rejected or rather accepted "with conditions!!!" The condition being that I pay R3000 up front. Not only that but I was led to believe that my credit rating was no good. I have never faulted on a payment and I have no debt. I own my house have a solid bank account and credit card. After much ado and phoning every Vodacom number I could find and a number they gave me in store I am still unable to get any kind if response or feed back to my query except that Vodacom will only allow me a one liner.????? At this point I just want to say this is not a a "store" problem the service was excellent and I name Mrs. Singh in particular. So now the question is where do I go now for a solution to my problem. Vodacom has let me down badly.