try this one...tell them that whatever they are selling sounds great, tell them to hold on then set the phone down. wait a few minutes and pick up again. say "oh, yeah....hang on a sec..." put the phone down again. repeat until they finally hang up. we do this and it seems to reduce the call-backs. not to mention, it is pretty funny.
I have beed getting calls from this number. I have quit answering them.
They just hang up after a second or so. Today they called again, i didn't get to the phone in time. So, I called the number back and it a recording told me the number had been disconnected. "Disconnected" in less than 3 minutes. Wow.