I have seen daycare ads telling parents that they can skype with their child during the day.
I can't even imagine how a provider could commit to that and find the time to go sit in front of a webcam with the kids.
I have never had a parent call for their child. They are all too young to really talk on the phone - aren't they? That would mean you have to stay there holding the phone?
I have parents sometimes call to tell me something but definitely not to talk to their kids. Most of the time they don't even ask about how their child is doing when they call.