Faulty Sim Cards

<p>I had upgraded my phone Feb last year and had to purchase a new sim card from Cell C La Lucia, all good till about 8 or 9 months later when the sim card failed. I was at the South Caost at the time and did a sim swop there. Now about 6 months later my sim card has failed again. Whats going on Cell C??? How many times do I need to do a sim swop just to complete a 24 month phone contract? Why should I be paying for this each and every time? I have been with Cell C for around 10 years now and I have never had this problem prior to these incidents.</p> <p> </p> <p>Is this the type of service I can expect?</p> <p> </p> <p>I await your response.</p>