Shady dealings

I have a serious problem with Cell C, In June I was double billed and the person who dealt with my issues just couldn't have been bothered.... And then I had to just roll over and be okay with their response but if the situation was different Cell C wouldn't be so chilled they were with my problem. Moving on, I find it very strange that I don't get billing of my other line although I get charged for postage but somehow I never get month to post. Further more I have a line which recently reached it 24 months contract however I never received anything informing me my contracted is either paid up or not in addition with my second line I do not receive any postage. I do not want ebilling which I have mentioned several times and agreed to paying extra for the postage which I am but yet not mail. I believe that Cell C and its people just don't have time for its customers and correcting customer details when requested... I am fed up with this network and when my contract ends soon I will cut my loses and go to another network.