IAM STUDENT AND SOMETIMES ITS HARD TO BUY AIRTIME WHAT I DON'T GET IS EVRYTIME I LOAD AIRTIME IT SEEMS TO DISSEPEAR OUT OF NOWHER AND WHAT MAKES ME SICK IS EVERYTIME I CALL THEM THEY SAY I HAVE JOINED SOME SITES WHER BY I HAVEN'T AND THEY DON'T EVEN RETURN MY AIRTIME AND I HAVE A GOOD MIND OF CHANGING MY NETWORK SESRVICE TO VODACOM BECAUSE THEY PROMISE BETTER SERVICE THAN THIS USELESS NETWORK. THEY SAY ON MTN ZONE YOU GET 100% FREE CALLS AND SMS BUT THATS NOT TRUE HOW CAN THEY LIE TO THEIR CUSTOMERS LIKE THIS THEY ARE REALLY USELESS read full review »