Contract upgrade

Useless service. I upgraded online on the 2nd of January, where they promise next day delivery. Nothing happend. I phoned them on the 8th, where I had to repeat the upgrade. They promised delivery between 3-5 working days. The following day, 9 January, somebody else phoned me from Vodacom asking about my upgrade and I had to repeat everything again, because they couldn't see my request that I did the previous day. Today, 16 January, nothing has happened yet, I have not yet received my phone. When phoning them today they informed me that I will receive it on Thursday, 18 January. This is unacceptable. Please keep to your so called promises. I pay through my neck for your services and then I do not even receive any service.