MTN Customer Services on strike and clients suffer

On our upgrade we specifically asked more than once that our data line be a closed line in order for us to not go over and get a huge account on month end. The consultant who helped us send the request through and on the system in store it shows our line is closed, but on the main system at MTN it shows our line is still open, there was some kind of error on the system. Instead of fixing it they just leave it without letting us know. Meanwhile we are under the impression that the line is closed and use our data line accordingly, and guess what we received a fat account at the end of May and they expect us to pay it. Also because of the staff of customer care being on strike they are not doing anything about it. We also pay for a 2GB night express which we receive but it does not work, when we download during the night express hours it takes data of our normal day data. This is the second time we have the same problem with MTN. Because of that big account, which we cannot afford to pay they are going to switch off our lines, which leaves us with no internet access. I am sick and tired of paying for services not received and people not doing their work properly.