I am a knife collector and bought several knives f...

I am a knife collector and bought several knives from a seller on ebay who claimed the knives were handmade.. Later I found out the knives were not handmade and in fact they were CNC machines knives. My discussions with the seller went nowhere and I decided to leave negative feedbacks for the seller and tell the fact that the knives they were selling were not handmade.
Well, ebay removed all my feedbacks for this seller and accused me of trying to extort product or services from the seller and blocked me from activity on ebay for 14 days.
As leaving feedbacks is a basic right of the buyers in ebay I feel my rights were violated by ebay in addition to have been falsely and unfairly accused of extortion. And they protected a dishonest crook at my expense.
Why licensing people permit ebay managers to abuse the little power they have and violate the rights of buyers like this is not clear to me. I certainly wish they question the conduct of ebay and put a stop to this nonsense.