Timeshare sales people use tried and true emotional manipulation. I remember once when we finished a time share presentation and said "No thank you", the guys response haunted me and later that evening, I shared that with my spouse. "I can't stop thinking about how he said 'I know most people say they'll call later, but they don't. So...God bless you anyway.'. I found myself wanting to be that person who DID call him back. My spouse said 'oh my gosh, I feel the same way!" We realized then that we had been had using a verbal manipulation trick. I expect there are so many out there and they all get used in one way or another.