According to what I've heard from quite a few coaches, ref complaints don't matter. I think the most common response I've heard is that its a "waste of time". Why? I can only guess because there is a shortage of refs and probably because the associations either don't have, or aren't interested in devoting, the resources to investigating ref complaints. But really is that any different to complaints about coaches? We've all seen the refs and coaches that have no business being on the pitch, but there they are week-to-week...year to year despite complaints. Club soccer is not a customer oriented business, in fact, I don't think I've seen a business that complains about or ignores its customers more than the "service providers" within club soccer. But, hey these are 1st world problems and we love to watch our kids play.