No doubt your report was dealt with by AI, which would not identify a fake. In any case ebay never see what you receive, so willnot just take your word, for all they know you could be trying to damage a competitor's record.
That is not the way to deal with this sort of situation, you open a not as described case, to return at seller's expense and get a refund.
As returns get on file and it costs seller money as well as NEGATIVE feedback, it teaches seller more than reporting to a computer.