Poor Customer Service - Selldirect is nonsense

I upgraded Telkom my contract through selldirect and they delivered a Wi-Fi device which wasn't working (It's even making noise inside as if something is broken). I called so many times with the seven day period without getting an luck. I went to Telkom a store in getaway and I was advised to cancelled or return the device to selldirect since it wasn't working. But I can't get any help from them. They have been giving me the run around for more 2 weeks now. How the hell do you expect me to take a device that has never worked? Why can't you cancel my contract.<br> <br> Stop giving these guys our information. I regret ever taking a contract with telkom because of them.