So, it happened!  Just got message from PP that somebody has made a charge back for $340 for something sold in mid February; they claim unauthorised use of CC.  I answered it with the C&S tracking info, and mentioned the fact they left positive FB. 

Howerver, I am bit concerned because when I looked at the tracking it shows as still waiting at the PO.  Obviously, they have collected it, but it is bit worrying that AP does not update the info when they did sign for it. 

I have also messaged the buyer that unless they stop the chargeback the matter will be handed over to the Fraud Squad. 

Will keep you posted 🙂