The digusting comment would bother me. Besides that though, there is the fact that you don't feel overly comfortable with that kindy... that is kind of a worry in itself, kwim?
How does DS feel about that kindy? I'm not sure from your post, it might be his first day in which case it's probably too early to tell... but if starts dragging his feet and not wanting to go that would be another sign things aren't all that good.
It is a tough dilemma. Good luck.