New Contract

I got a call from a SellDirect consultant on the 2nd June 2015 - selling a cellphone contract on behalf of Telkom Mobile. It was a good deal, which I accepted, and everything was concluded telephonically. On the 10th of June, the cellphone was delivered to me and called them to confirm. Since then I have been struggling to get my SIM card activated - until now - 17th June a week after i'm sitting with a dead phone. I have called the call centre number ***) and it just rings, how unprofessional. I have even visited a Telkom store and they told me they are not linked to Selldirect even though it's a Telkom Mobile sim card I have. I am not sure what other avenues are available but I want to cancel this thing with immediate effect, clearly they don't have a customer service dept. and that is a nightmare for me.<br>