I've just had a non-paying buyer, and just now closed the case and was told I'd receive a final fee value credit. How do I go about making sure the buyer has a non-paying strike issued against them? Is it done automatically, or do you actually have to do something for it to happen? I looked for an option to do it but it looks like my only option is to leave 'positive' feedback, which of course I don't want to do.