bad service with no feedback

I am trying to open a new contract at vodacom. The first time they said it did not pay my account then I phoned the credit department of vodacom,then they said theirs no record of me NOT paying my account. The i waited for a week and got no feedback or response, went back again after speaking to the manager they said it will have feedback in about an hour. She sent me home yet again with no answer. I have been phoning everyday and all they tell me is that it still pending and unable to tell me why it is taking so long. Each time I would be told that they phone me back and never does.