Thanks for your reply Lawprofessor, but they did contact me via a telemarketer and then a sales guy did come to the house to test my water and then try to sell me a water system. I told him I needed to think about it and want to know if I do buy, which I probably will, do I have the right within 3 days to say I do not want you system please refund my money? What if they install it within the three days since he was saying that night when he was trying to sell it to me that they could have it installed tomorrow? Would I still have the right to rescind within the 3 days?