Samsung Rewards No delivery, no means of contact

I have purchased a 32gb Samsung USB duo off the Samsung Rewards app through the beta store. The USB was delivered to someone else in Cape Town instead of my place I Joburg. I have tried sending emails, calling the rewards contact number and using the customer support message in app with absolutely no reply. I find this unacceptable that there is no means of contacting Samsung Rewards about my problem. It has been more than 6 weeks since I have purchased the USB still with no reply as to when I shall receive it.