Many people in South Africa, especially the poor, rely on credit to survive, she says.
In June, Deputy Justice and Correctional Services Minister John Jeffrey is reported as having said to the National Assembly that by restricting maintenance defaulters from getting credit, they will see the urgency of looking after their dependants.
The clause in the Maintenance Amendment Act proved controversial, and was taken out of the bill earlier in 2015.
But it was reinstated in May when no viable alternatives were put forward.