OVER CHARGING AND INFERIOR SERVICE!!!!!

For months now, I am struggling with an unstable Internet connection with Herotel. There are always issues and on top of that, since they took over Bromberg Wisp they have been over charging me every month. I am paying R1 102.50 per month for a 12mgb download and 5mgb upload line, but for nearly 2 years they advertise their 15mgb download and 5mgb upload packages for R999 per month. I have sent them endless emails to try and sort out this over charging as well as stability in connectivity, but they do not even bother to get back to me. Last week I sent emails through stating that it is again nearing month end and no solution has been given on the over charging of my line and specifically said that this needs to be sorted before I pay for the new month. Needless to say, the disconnected my internet. This is some of the worst service I have experienced from a service provider and would suggest that people think twice before making use of their inferior service standards and quality.