whats wrong with ebay?

Ebay seems to be having major problems - they "lost" a dispute I opened on a guy (which I had to redo)He had 4 negative(out of 5) feedbacks - he bid high a pair of speakers that he had no intention of buying - He sent me a profanity laced e-mail when I sent him a invoice and he also sent me another one when he left the neg. feedback taunting me about it -ebay let the guy leave negative feedback on my perfect account and said they cant do anything about it - I've sent a couple of emails to ebay(after finding the buried email link) with no response from them except that they cant do anything about the feedback. anyone else have a problem like this?