Back when Everyone And His Cousin was being continually cold-called to switch their land-line phone service over to different carriers, a friend of mine used to have a lot of fun "agreeing" to switch . . . but then neglecting to tell the salesperson the verbal password on his current account or even that it had one. He said he found it highly amusing listening to them struggle to remain polite and cordial, as the switchover kept failing . . . and failing . . . and failing . . .