Frustrating and disappointing service from Telkom Mobile and their call center

I'm very frustrated and disappointed in telkom mobile's service, if I could rate them a zero then I would. I ordered a contract phone online and in less then 24 hours they called me back to process my order, 7 days later they tell me they will be delivering my order but to my surprise they delivered a SIM card only with NO device and when I asked the guy who delivered the SIM about the phone, he said that he was not sure and that maybe it might follow later on the day. So since no device followed, I then called the call center I spoke to Frank who put me through to the sales department but after holding for 20 minutes they dropped the call. I called back and spoke to Delisiwe and requested to be transferred back to sales and she refused, I then requested to speak to her team leader whom she disclosed her name to be Nokuthula Ngozo then I was placed on hold for an hour then she hang up on me. Now because I was feeling very patient that day, I called again, I spoke to Sindisiwe Radebe and requested to speak to her team leader whom she disclosed to be Boitumelo Koapen but I was told that the team leader refused to speak to me because I didn't want to go through security check again and the agent was very argumentative and disrespectful, because apparently it's Telkom Mobile's procedure to only assist telkom clients so meaning if I'm not their client then they cannot assist me. Now I'm angry and I call again, I Speak to Nontobeko Radebe and I ask for her center manager's name and I was told it's Terrence Puckree but I will not be able to get his contacts or e-mail address before speaking to the the team leader, so I wanted to speak to the team leader then I was told he/she was on another call and will call me back as soon as they can, that was two days back and I'm still waiting for a call back front Nokuthula Ngozo and Ntuthuko Ntuli.........I really fail to understand why speaking to a manager is such a difficult tusk. I'm also starting to believe that Telkom Mobile does not train their stuff on how to speak to clients let alone resolving their problem because they are rude and argumentative.