Dina Lohan has accused her ex-partner Michael of failing to hand over his monthly installments for Lindsay's younger siblings Ali, 16, and Cody, 14, just months after the former couple settled a previous child support dispute in court.
The Lohan matriarch has lodged a complaint with the Child Support Collection Unit in Nassau County, New York, alleging Michael owes her more than $30,000 (£20,000).
Dina admits she's furious with her ex-husband for paying child support to a woman in Montana who won a default judgment against him because Michael never opposed her claims he fathered her young daughter.
Dina tells the New York Post, "It's completely ridiculous. When I heard that he was paying for this child in Montana, I just had to fight for my kids... This child in Montana gets more than Ali and Cody (get). Lindsay is so upset and disgusted with him. Last year, I went to court on Christmas Eve, and here I am this Christmas, going back to court."
But Michael Lohan retorts, "I never admitted it was my child. I'm paying to stay out of jail."