for them to send a deformed chick and not at least be willing to replace the chick that's horrible business.
No, because the deformed chick was an EXTRA.
The poster got the correct number of live, healthy chicks: 6 paid for, 1 free that the hatchery offers with any order, AND the deformed chick to make a total of 8.
So the hatchery does NOT owe any money or replacement.
(I think the hatchery should have culled the deformed chick instead of shipping it, but that is a personal judgement that has no bearing on the rest of this.)