Struggling to Return incorrect delivery.

I placed an order over the phone for delivery. The Wrong Goods were delivered to me. I then Visit customer care in Midrand Vodaworld, waited an hour and a half to speak to someone and got told they cannot take the wrong goods from me. I then received a service request number for the goods to be collected from me. <br> I am still awaiting the RO number or the other for the courier to collect it from me before they can reverse the upgrade.<br> <br> This has happened last week Thursday the 9th of April 2015. I have followed up every 24Hours by Phoning them with the Reference Number.<br> <br> I am still waiting.<br> <br> I am sorry to say they will be losing my business as a result of shocking after sales service.