I received a phone call about 6 months ago from a man indicating that he was a real estate agent and wanted to know if I wanted to get rid of my Scottsdale timeshare. I told him that I had no interest in talking to him. He then asked if I wanted to buy more. I told him not to call again and hanged up the phone. How did he get hold of my phone number or even knew about my owning a Scottsdale timeshare?