Terrible internet Service provider!

What a terrible internet service provider! I've been with Jenny for a couple of months now, subscribed to a 12mb uncapped line, this speed is maybe achieved one or two days of a month. There is always a problem with their towers, half of the month there is absolute no connection and the other half of the month, half (6mb) the speed you are subscribed too. The connection is extremely unstable and unreliable and at the end of the month they charge you for the 12mb line. Phoning the service department falls on deaf ears and the problems are not getting resolved. I would not recommend anybody in the secunda or Trichardt area to subscribe to Jenny.