Ask HN: How to say no to a GitHub issue feature request?

Feeling very upset about a feature request.

The main reason is, the requester behaves like I am hired to customise the software for him. And I should keep working until he is satisfied.

Even if I don't like it, they keep saying this is very good feature, blabla...

What should I say? F... off?

For these kinds of people, they will never understand the manner of GitHub and do some PR.

And they won't pay at all...