No response from customer care

<p>I entered into a contract deal with Mondo for 2 Samsung Galaxy J1 ace neo phones on the Telkom network. I received the phones on 12 October 2016. It is a day later and the sim cards are not registered on the network yet. I have tried calling their Customer Care numerous times today and was left on hold for almost 10 minutes with each call. I also sent them a message via their website this morning, I sent another one after waiting for a response for more than 5 hours. I cannot pay for a product that is of no use. Please resolve this issue. </p>