When they "delete" their RM ad/profile that can't be undone.... that happened by mistake to a Hungarian escort called Gabriel, he posted about it on here, he possibly had a few drinks but might "butt dialed". There's an option called "delete your profile", if you have a profile in RM take a look and read the warnings. I guess it's the same for client's profiles.
They can always create a new ad if later they change their minds and come back to the business.
Again Sean Xavier at least retired and came back 3 times that I can recall.