A Customer Service Agent Doesn't Give Me "Permission" To Speak To His Manager?

<p>This has been the worst experience I've ever had with any service provider. Firstly a customer service agent fails to fully understand my issue as it relates to ***** happening on my account for a second time. And then because of his rudeness and failure to communicate with me as a customer properly, when I ask to speak to his supervisor he blatently says "I do not give you permission to do that".</p> <p> </p> <p>Since when do customers need permission to complain about the service being provided? I will accept nothing less than a formal apology from the Zwelibanzi Molaudzi (hopefully I've spelt this correctly) and his supervisor for the worst display of customer service I've ever experienced.</p>