No service for online order.

I placed an online device order with Vodacom for the first time on 27 October. During checkout, the process generated error messages but still took my payment. I received an order confirmation email, and the order appears under my profile on the shopping site. However, nothing is happening, and delivery is 3 days overdue today. I have tried without success to contact the online team by telephone and email on multiple ocations, and am just being ignored. Bad form Vodacom, this has been the worst online shopping experience of my life.