Yes, please clarify…
You say that you’ve never talked to him, yet you say that he says that he won’t complete the form. How do you know that he wont?
Do you know where he lives? How was he contacted?
anyway…the fact that you’ve never seen him and that he’s never paid support will likely be enough for you to get a waiver at most schools that require his info. Contact each school and ask what they need to get that waiver.
(in cases like there, it makes you wonder if the kids would be better off if “mom” never listed a dad’s name on the birth cert.)