Annoyed and with unhelpful staff

Good day, I lost my Cell C sim card and I contacted the call centre to ask what the process was and if my sister could get the card for me as I'm currently abroad. I would like this to be sorted before I come home and convert it to roaming, this is easier whilst travelling. When I called your very unhelpful call centre all they said' sorry this number has another name, you didn't RICA it\ didn't I assured her that I RICA'd my account as all my clients, family and friends know my number and did not want to loose them as contacts. After 15 minutes of explaining living abroad all she said was 'sorry sir I can't help are you happy with my service?' She did not investigate nothing did not request my surname. After our conversation I called my number and sent a text to the \"person using it\"nothing no response to me that mean nobody is using my number and she was just to lazy to tell me what I need to do. I called again and got cut off thrice. I email a support email nothing it's not been over 2month All I want is for my Cell C card with my old number, my sister collect it for me and if you are able to set up roaming without me being there is will be great. "