If and when you do leave the well deserved Neg , do not mention a PayPal dispute or anything that may give the seller the opportunity to have the feedback wording removed. ( The red dot will stay but the comment gets removed)

Before I knew the in's and outs of eBay I thought it best to warn others of a shonky ( putting it mildly) seller and mentioned I had been refunded by PayPal.

Seller had the feedback removed , and sent me an in your face email  to gloat about it :^O

I know better now and like others don't mess about anymore with sellers who try one over.