Vodacom cancelation department useless.

I upgraded online and had my phone setup in store. They advised that the phone was overheating and that I should return it. I called the cancelation department 5 times and every time I'm told they'll send a courier to collect. It's going on 2 months now and I just had another 30min call with them. I've been with Vodacom from the beginning and every time I call they struggle to find my account. I'm over it!