Can't be asked to read through the thread but yes report him. By sending you replaced items from logitech with false claims there is a risk of you getting into trouble.
I actually remember there being a dedicated thread on this little scheme on a hacking forum. People would used a fake PID generator to get logitech item details, then call them up and claim the free item.
Why? He has proof it was bought through eBay and the seller is the one doing the scamming.
Will be nice to see the guy imprisoned for fraud.