When I resigned as a ministerial servant and told the elders I was having a few doubts, they did try and "readjust my thinking", in their words, a couple of times while I was still attending meetings, and offerred to come and study with me, but I turned down the opportunity.
After I walked out of the kh for the last time in November 1999, they called a few times in early 2000, but left me alone after that, till they hunted me down again in July 2005, to see how I felt about going back. I told them that I no longer believed in any of their bullshit, and wrote a letter of disassociation a week or so after their visit.
They didn't make much of an effort to win me back really, not that I'd have gone back if they had.