If you tag the profile that you are discussing, that will cause email to get sent to the curator or main manager, I have noticed. But the best thing to do is to send email to the manager from the profile and that goes to the managers and the curator.
There are many discussion threads and as you can see it's easy to not see a request. I personally skip discussion threads for ones that might be relevant to me and that's when I have time. There could be weeks when I am so busy I don't manage to do that.
And definitely ask for curator assistance in the thread thatJohn Smith linked to. There are multiple curators reading that thread.
Also, curators can help but there are tens of thousands of members for every one curator. We're here to help with things that members cannot do and to help new members learn how to use Geni tools.
When you do post, you might provide sources, suggested changes, discuss specific erroneous relationships or data, etc.