CellC - Poor service

Phoned in twice to do a sim swop and passed the first set of swcurity questions. Then at a later time on the call I was asked another set of questions to which I answered 100% correctly but it kept failing me. The first operator just said you failed the questions and very abruptly put th ephone down on me. The second gentlemen was more polite but again failed the questions although my answers were correct. He mentioned that these questions re fro an external provider. I asked to speak to a supervisor who naturally was not available but I was told I would get a call back. Again true to frm ..no call back. So now I have a contracted sim card that is faulty but I cannot swop it. My minutes and data expire at the end of every month and I have lost these for the month of November already. Just as a FYI I have been a CellC customer for close on to 25 years and have 3 contracts with them. I asked for a cancellation of the contract but I was told there would be heavy penalties which baffles me as this was a SIM only contract. Needless to say when the 3 contracts come up for renewal ..aint going to happen