Pay for Vehicle Licence but DO NOT RECEIVE IT!

My vehicle licence was due end December 2015. I decided to make use of the online system. I paid for the licence timeously - end November so that the licencing department would have plenty of time to send my disc to me. I did not receive the disc. I kept emailing them with absolutely no response from them. Their site shows that the transaction is complete. I then called and was on the line waiting for about 5 minutes before I got a call centre person who then told me I need to email them. I literally have emailed 11 times with no response, then to be told by a call centre person, I must email again!!!!! I am currently driving around without a licence and the call centre can do nothing. When I ask to be put through to somebody that can make a decision, I get told that she cannot do that. So what does a person do???? When it comes to City of Cape Town - do not use their online systems - IT DOES NOT WORK!!!!