How did you "find that out"? It's not true. We take care of these requests for people every day.
> I have emailed HN@ycombinator.com and they don’t respond
We always respond. It may take a while though, because the inbox gets brutally piled up. It looks like you emailed 3 days ago. There are 32 ahead of you in the queue. I'm sorry, but there's not much I can do but answer emails in the order they were received. (The actual process is more complicated, but that's what it boils down to.)