Bad service

My brother called the cell c customer care regarding a sim swap ... the person who assisted I can't remember her name but the surname is Hlatshwayo was so rude and not helpful at all and when we requested the ref number for the call we were told there aren't any ... I then requested to be transfered to the call survey she put me through to the technical department where I requested to speak to a team leader and got 1 by the name oc Lulama can't remember the surname thats if she is a team leader ... I laid a cimplaint and she promised that an agent was going to call me back and nobody has contacted me back. I am highly disappointed on the service that we got and will terminate their contract as soon as the 24 months are over