all but one of my parents pay me weekly, they pay the Friday for the next week in care, you don't pay don't bother coming on Monday for daycare because you have not paid for the care.

This mom sounds horribly disrespectful, not only the paying issue but showing up constantly before you open is showing she has no respect for your time. I won't open my door before I open, I am still taking care of things for the day, eating my breakfast and taking care of my own child before she has to share me with 5 other children.