Obviously, Oliver Hudson's pointed Father's Day diss at his and Kate Hudson's biological father, Bill Hudson, didn't go over too well with the former musician.

After Oliver took to Instagram on Father's Day to post a throwback picture of himself and Kate as children next to Bill, captioning the pic, "Happy abandonment day," the 65-year-old now says he no longer recognizes the two as his children.

"I say to them now, 'I set you free,'" Bill tells The Mail in a new interview. "I had five birth children but I now consider myself a father of three. I no longer recognize Oliver and Kate as my own."

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Bill even wants the siblings to change their last names.

"I would ask them to stop using the Hudson name," he says. "They are no longer a part of my life. Oliver’s Instagram post was a malicious, vicious, premeditated attack. He is dead to me now. As is Kate. I am mourning their loss even though they are still walking this earth."

Bill accuses his ex-wife, Goldie Hawn, of "poisoning" their two children together against him. He also says he tried multiple times to remain in Oliver and Kate's lives growing up.

"I believe the drip, drip, drip of poison which started when they were kids finally took hold," he says. "Goldie wanted to create this myth of a perfect family with Kurt [Russell] and she wanted me out. ... She gave interviews about her 'wonderful' relationship with Kurt and how the kids called him 'Pa.' She described me as an absent father. I’d call her and go, 'Goldie, how can you say that?' but she’d just reply: 'It’s a better story.'"

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There now appears to be no chance now of reconciliation. Oliver and Kate have also recognized Kurt as their father, both of them posting pictures with the actor on Father's Day.

"I don't want to see either of my eldest children ever again," Bill stresses. "It's over."