Dobby, Winky and the Office for House-Elf Relocation

[Milz]

No: HPFGUIDX 18486

I was reading Newt Scamander's biography in "Fantastic Beasts". It 
mentioned that he worked in the Office for House-Elf Relocation in 
the Department for Regulation and Control of Magical Beasts. 

If there is such an office in the Ministry, why didn't Dobby go there 
after he was freed by Lucius Malfoy? Wouldn't the Office have 
relocated Dobby? Also, Wicky was the house-elf of Crouch Sr., 
wouldn't she have gone to the Office for House-Elf Relocation (OHER)
after she was freed? Or is the OHER a dubious Ministry Office 
that "relocates" House-Elves by enslaving them to other families?

:-)Milz