Vodacom just lost a customer of 22 years!!!

I upgraded my line via the call center and received the phone a few days later. After the third attempt as I asked specifically that they call me before delivering to ensure that I am there. I received the wrong phone and called the same day to arrange collection. I was told that it will be collected within 14 working days. I have called multiple times as I have not received any booking for collection and keep getting told the 14 days is not over yet. It is now 17 working days later and all I get is that it has been escalated and it will probably be collected this week. No supervisors are ever available when I call, it’s always the back office which it’s escalated to and they don’t take calls. I am fed up, the worst service ever and I have been a customer for 22 years!!!