This ebayer likes to message random sellers, voicing his opinion, because he doesn't like the policies, instead of simply just moving on and buying from another store. Off the brake, you can tell that this is a problematic buyer that deserves to be blocked. His feedback left for others, including one that appears to be retaliatory according to the seller, should tell you everything you need to know. He probably uses feedback extortion on a regular basis to get his way. Save yourself the headache and avoid selling to this "individual".