guy needed a service. sent him an invoice through paypal. I believe I indicated it's for service in my invoice, but not 100% sure. 50 days later, guy does a chargeback with his cc company, making my balance negative. paypal wants to know my side of the story. I basically wrote this was for a service and I dont have tracking number. what will happen next? I am just curious, would it have worked if I sent a package to his address today, and gave paypal the tracking info?