CELL C does not care how customers are treated

I have been a Cell c customer for more than 15 years. When my mother passed away and recently I had a phone and sim card ******, I have been trying to get through to someone to assist me. I have been to the Cresta Cell C store, tried the online communication portal, no luck there. The information the call centre have of me does not correspond to what I know of myself, which means I do not pass the identification test. No matter what I say or do, I can not be assisted because Cell c does not what to find a way to confirm I am who I say I am. So there is a phone and sim card out there with a contract which I still have to pay every month and have no control over. Cell C does not have a problem debiting my account every month, but assisting me with a query is not part of the deal. I am now wondering how they are going to identify me to respond to this review?