Mathew Knowles Baby Mama Says Shes On Food Stamps

Beyonce's dad is so far behind on child support payments for his illegitimate kid ... his baby mama is destitute and has to use food stamps to survive.

Alexsandra Wright hasn't seen any money from Mathew Knowles since we posted our story back in December -- when he allegedly owed $24K. We're told he now owes $32,135.90.

Wright -- whose son is Beyonce's half-brother -- is now on public assistance ... and gets $300 a month on a state-issued EBT card to pay for food and other expenses.

Wright went to court for help ... but the judge is noodling over exactly what to do.

Knowles insists he's not a deadbeat dad ... and has blamed a clerical error for the delinquency.

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