Someone called from the phone number 94583764, speaking in a familiar tone in Chinese, claiming that I had changed my phone number and asking me to save this new one. When I asked, "Who are you?" the caller seemed surprised that I didn't recognise his voice. In a previous incident, I was fooled as the first name I guessed became their name. This time, I said I had no idea who he was. The person then came up with the name "Alan." When I asked, "Alan who?" he hung up.