Upgrade Call centre - Terrible service

I Called the call centre and upgraded my phone on the 1st of November, the phone arrived on the 3rd. I called Vodacom on the 4th to say i didn't like the colour and to have it changed to the Gold one. Thursday the 4th i received a call to say RAM will collect and replace on Friday. No one came to collect, i followed up thereafter everyday speaking to various people on the call centre and was told the phone was dispatched and that delivery will be soon. A week later no collection and no delivery. I then spoke to Dineo, who i believe is the team leader she also promised that the phone was dispatched, few days later she said the phone was returned as the deliver address was a PO Box address, like really????? who delivers at a postbox and who told them to deliver at that address? she then promised it was changed to the home address and the phone will be delivered in 2 days... still no phone i asked to speak to a Manager - Maria saw the trails of the calls and saw the problem is with Vodacom. She promised the phone will be collected today 20th November, still no one came to collect. i am sitting with a phone i don't want!!! Is there anyone who can resolve this?