call centre - bad attitude

I got my DSTV disconnected due to again , the multichoice incompetency! I changed by banking details a while ago with them and no one wants to take responsibility for the error. Every consultant I speak to gives a different version of events all the time and one advisor told me I had insufficient money in my account!! How dare you tell a customer this , this was not even the case. They were still debiting from the wrong account. I called again on the 2nd of Jan , Spoke to a lady called SIMPHIWE MALINDI for a good 48 minutes who made me hold for a good 40 minutes and finally hung up on me without even resolving my issue. Her attitude is really unbearable and I work with clients complaints daily , I can never speak to a customer the way she did? At some point she asked me\ Don't you know what credit is?"really ? this agents must be taught to listen and resolve issues"