Ebay sellers can refund to remove negative feedback?
So I bought an item from a "top" ebay seller, thousands of feedback with 99.9% rating. The item and the seller were rubbish so I left negative feedback. There were 8 negative feedback in a row including mine after I had left my feedback last night. This morning I received an automated ebay message saying I had been refunded. I checked the sellers feedback and all those negative reviews had disappeared. First time I have seen this, is it a new practice or has it always existed? I have had refunds issued before but my feedback has remained. Clearly it is a way for the seller to preserve their high rating but it seems a bit fishy of a practice.