We would need much more information to answer this. Was this a Department of Revenue case? Were the arrears established or Retroactive? Did he have a lawyer? Was a Motion Filed?
With these facts I have no idea how it happened.
This information is a general answer and is not specific to any particular case. Carin Manders Constantine, Esq. 727-456-0032/ 727-488-8272 familylawyer411.com/about-carin