Worst service ever

I app**** for a new contract and when the phone was delivered, the wrong simcard was supp**** and it got stuck inside the handset. I requested for a handset to be replaced and the correct simcard to be supp**** together with the handset and i even told them to highlight the issue of sim size for them not to repeat the same mistake, however, when the new handset was delivered it had no simcard and upon asking i was told the system cannot allow them to generate another order. I was advised to go buy it myself and will be re reimbursed. When i told them i wont have a chance to go buy the sim i was told that the contract will be cancelled and the handset will be collected. I am now in my 2nd week and my number is not working and my business is suffering unnecessary losses just because VODACOm cannot supply me with the simcard.