Bad Feedback from Non-Paying Buyer

How could a buyer who has not paid and actually cancelled his order be allowed to give a feedback, and a negative one at that.  But listen to his reason why he gave me a negative feedback >>"It is a **bleep** movie canssel the order" . Yes that's direct quote of his comment. If eBay will not remove this feedback, I will broadcast this incident in all social media and if I get the time and money, I will even sue eBay.
p.s.==Ebay wont let me quote directly his rude comment (c r a p) which they bleep but they printed that $%#&@  buyer's rude comment. What kind of policy is that?