Worst Customer Service

I asked to be given two separate amounts yesterday regarding paying my contract in advance and I was met with a fairly frustrated and rude agent, whose name I can't fairly remember, however her name is along the lines of deshni. She then asked me to hold after our horrid exchange and she subsequently put on hold for more than 30 min (as if that would be a benchmark), it is indicative that MTN does not have a consequence that assures customers that something will not occur because I have had more than one exchange with customers that have had very bad experiences with their call centre.