Blacklisting phone without concent

My phone got blacklisted by Cell-C without any blacklisting forms or any correspondence between us. I am a Vodacom customer and bought a Phone from IT Sure via the insurance. The phone was brand new. Now I learn that Cell-C blacklisted my phone without any reason. They won't assist me because I am not a client. But it is impossible that they then blacklist my device and expect not to assist me. There was never a Cell-C sim card in my phone so I have no idea where they got the IMEI from. <br> <br> Funny part is when I call their call center I get Laughed at because I am not a customer.<br> <br> Or I get told by Vodacom to call them or they send me to vodacom. Ridiculous. This is their error and they should find a way to assist me even if I am not their customer.<br> <br> Above all this I am left without my phone and two days leave to go to the police station and to call the world to be told that it Vodacoms fault, it's Cell-C's fault or get laughed at.<br>