Rude customer service call centre agents

<p>I received a call from a lady selling markham airtime this morning. When I told her I am not interested in the airtime and while I was still talking she hung up the phone. I called the customer service call centre and they transferred me to sales department. The lady I spoke to ( sophy) was very rude. She was raising her voice at me and cutting me short. She said I cannot launch a complaint as they did not call me today. I asked to speak to her team leader and she put me on hold. She later came back and said the team leader (Ryan)will call me back as he was very busy and he never did. I called again and I spoke to another team leader (Marvin). He said they cannot locate who exactly called me as they have many agents. He said that even if I can give him the exact time and and my details he cannot locate the agent. Your agents should stop calling me. If I need something from markham I will go to the store</p>