Dealing with Apple's review process is a pain sometimes. We recently submitted an app which made it through the review process but was rejected for screenshots. We thought the screenshots were fine, so we appealed. I think we lost the appeal, but we still haven't received a phone call. So we just went ahead and changed the screenshots, but we've been in review for the last few days (should have taken a few hours for metadata only review). I'm beginning to suspect our app may have been banned/rejected.