Mobile Data contract device faulty, but Telkom has not responded to queries

I took out a mobile data contract with Telkom and recieved my device on 15.12.2017, I inserted the sim received and turned the device on, the signal light was red. Considering that i received the device on Saturday afternoon and knew that the Sim needed to be Rica'd, I waited until Monday morning to try the device again. On Monday the device still had not received signal, i called Telkom and asked them what could the be the block, the lady then activated my device and sim on the network, she said to wait a few minutes before trying to switch the device on again. I tried in about ab hour and still device not receiving signal. I called Telkom on Tuesday (12.12.2017) and got guidance on the phone trying to troubleshoot and get the device working, still no joy, so the customer services lady then logged a call for me. I am still waiting until today 18.12.2017 to recieve a response from Telkom regarding whether the device will be collected and a new device delivered or not. I called the customer services line several times and they keep telling me that the matter has been escalated and that they cannot help me further i have to wait for another department to update them. They also told me that i need to give them 72 working hours to rectify which equates to 9 days???? What dissappoints me further is that the device was received with no instructions or a letter from Telkom telling me about their terms and conditions and what happens should the device be faulty, nothing at all was received. I am now sitting with a device that doesnt receive signal and no correspondence from Telkom.