Vodacom service? What service...ca

Hi I took up a contract for a laptop and router with Vodacom in July, this was done telephonically. The goods were delivered within a week or so. The problem I realised a couple of weeks later was that I had received 2 sim cards instead of one. Upon this realisation, I made contact with the call centre and was advised to return all goods and that a refund would be processed. I am still awaiting feedback to this day. I am expected to follow the matter up myself... no one has ever ever made the effort to keep me updated. All the agents do is yet to sell you something else instead of resolving your query. I need answers.