I just spoke with a person from Jam and very politely told him that we were not interested. He would't hang up when I told him goodbye and he then called me back and acted like a crazed person. I told him to not call us and hang up. He was a real jerk. I called back and got a recording and told them to add me to their do not call list.
these guys violate the Telephone Consumer Protection Act of 1991 (TCPA. Keep track of their calls and make them pay you $500! Here's more info on consumer law and how to collect on these annoying telemarketers: http://www.thecommondenominator.com/cl062899.html