Hi I was just wondering - my son and his ex have separated nearly 4 years ago - they have a child together since September 2018 th3e ex applied to centrelink for maintenance and now has since been taken out of my sons income each week ( I think a better way to go ) BUT now the ex is threatening to go to centrelink to try to get him to back pay child support from the day she left him can this be done up until the date of application
thanks
thanks