I think if you insult someone’s species, they very much have an interest in the topic. You’re lucky if all they do is politely ask you for some sort of reasons for your blanket hatred of them, their family, and anything related to you, rather than just attacking you outright or trying to publicly expose you for a bigot. They are likely trying to be as charitable to you as possible for them in attempting, instead, to use reason to sway you from your hatred, and to deter others from such unfounded hatred. If you won’t even give the attempt of either apologizing for your remarks against their species or supporting what you believe is true, they are being continually more patient with you than you are with them. Indeed, by ignoring them you are rather clearly increasing the insult by deeming them, and presumably their entire species, unworthy of even speaking to or justifying your hatred of them to.
And calling a troll a troll is absolutely name calling too, which is against the community guidelines explicitly.