I heard of something similar happening to a provider in my area so I added to my contract that if a parent is more than one hour late and I have tried all their contact methods I will consider it an emergency and contact Child Services and/or the police.

I think you will have to seriously consider terming this family. I agree with PP your late fees need to be collected immediately.

Good luck with everything...what a disrespectful thing to do- not just to you but to their child.