What is the service that this buyer wants to use? Do you have a link?
You are probably right that it is a scam, but it might not be...she might want to use a legitimate third party for added security.
Just make sure you are dealing with a 'bad guy' before you start getting vengeful. But once you are sure, let the p-p-p-powerbook reprise begin!
What sort of prank are you planning on pulling?
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