He walked away complaining and threatening to "get his own back". (I guess he really did have Tourettes).
Afterwards I felt guilty. I always do. That's the whole point of this particular sales strategy. The punter says "no" and feels like a heel or "yes" and feels exploited. It's not much of a choice.
This morning I've been doing research. There's a company that more or less has the door-to-door business sewn up. They used to be called Cobra and now they're called AppCo. They're legit. Unfortunately. Charities and corporations hire them to sell everything from dusters to contracts with power companies. My lad may not have been working for them but odds are he was. You can find testimonies online about their business practices and the experience of working for them- none of it particularly edifying. Common practice is to bus groups of salespeople to areas (this guy must have come with wheels because walking along the roads round here is suicidal) and let them loose for the evening. I didn't let my guy get as far as unpacking his wares but I know- from past experience- he'd be charging ridiculous prices. The sales-people get hooked in with promises of money and advancement but few of them stick it for long because it's unpleasant work (only a socioopath could enjoy it) and poorly rewarded. (Our friend Peter was recruited once and lasted a day). The odd one or two get to climb the ladder and run their own teams.
Ailz says it's one up from selling the Big Issue. I think it's one down. It's more highly pressurized (for everyone concerned.) Besides which the Big Issue is a halfway decent magazine.