Wrong Item - No Return Processed

On 27 October I ordered (Order: SIN***) a headset: SkullCandy Fix 2.0. Cape Union Mart delivered SkullCandy Fix 1.0. On 01 November I requested a return online (RMA: ***). To date, I've not heard anything further from you. I do not know what to do further??? Am I expected to pay to courier the incorrect item back to you, or are you supposed to send a courier to collect it from me? Will I be refunded, or will you provide me with the correct headset I ordered? What about the inconvenience factor here? I've been without a headset for more than a month, without any proper feedback? This will be my last purchase from Cape Union Mart.