Publish an announce in the erotic messages page of a magazine.. Something like: "Hi, I'm your sexy Amiga. All services. Call this number:........." with this fellow's number.
Or order a whole year supply of something (let you imagine what..) using his name, address, number.
Or engage me as your credits resolver

Low prices and good results!
Seriously, I guess you should go there with a couple of your friend (you can never know...) and see this person in his face asking him your money.