Worst Mobile Network to deal with

<p>I upgraded my contract in December 2015. The mobile device came with a new sim card. In april 2016, the sim card stopped working. I had to go into a Cell C store and pay for a sim swop. Now, 4 months later, my sim card has stopped working again. I have called the Customer Care line more than 15 times, at my own cost because the call is being made from a landline. No one can assist me. Everytime I get through to a consultant, I am told that I need to call a different department. It is now 5 days that I cannot make or receive calls. Cell C service is absolutely pathetic and I wish to cancel my contract with immediate effect.</p>