Minutes syphon due to cross connection, and CellC says "Too Bad"

<p>In the last week since 1 Jul I have made only 1 call of 5minutes (confirmed by consultant), yet my 100 min on account has run down to 10. They cant explain it and cant fix it. Probably has been happening for years, with my data as well.</p> <p> </p> <p>I discovered about month ago that another number somehow connected onto my sim-card; now I am also getting all his calls and he gets mine. I cant call Mr mystery "Mark" beause when I phone his number I get to my own mailbox. (I know his name is Mark because everyone trying to phone him gets through to my phone instead)</p> <p> </p> <p>Visit to Somerset-West CelC shop (4 hours!!!), as well as call to customer service (forever on hold) could not resolve it and no-one seems to know what next.</p>