I have seen couple of questions related to rejection of submissions to conferences (CS). Coming to my case, this is my third rejection, I agree that first two were fair decisions as the paper was not clear and needed more thorough experiments. However in this third submission I have put in all possible effort to make it the best considering feedback from prior submissions.
I received initial comments from 4 reviewers with no scores and based on their comments it was on borderline. Since there was a rebuttal phase, I have sent a response clarifying issues raised by them. I received my final notification today and it was a 'reject' decision. The final reviews had comments from an additional reviewer. His comments are atrocious and unfair. He pointed out that he is rejecting the paper as some issue X was not addressed at all. However we have addressed X with a thorough evaluation in a subsection and results put up in a graph. I'm sure that this reviewer has not read it properly. If he raised his issue may be on the way we solved X, it would have been more appropriate.
I know that appealing to the PC chairs would be a futile effort but at the same time I do not want an unfair review. This feeling of rejection based on unfair review is depressing me. How do I go about it. I feel the only way out is to resubmit it for another conference in near future.