KinderCare Education review: director/supervisors treatment

I have had my children in the Kinder care in East Mesa Az, for almost a year now. However within the last 7 months things have changed drastically. I had my third baby and I put him in there when I went back to work. I noticed that I always had balances on my account. When I would inquire about this balance I was told don't worry about it. Well the balance went up to 700.00 dollars and I was told either pay the balance or the kids can not come back. Well I started asking what is this balance for. I was first directed to Erika who is the district manager who at the end told me it is not her job to review my account. When I asked to speak to her supervisor I was reffered to Jane who is the VP secritaty who told me her boss does not want to talk to me and will not talk to me, also that there will be no more reviews on my account and what ever the balance is I will just have to pay. OH NO! Finally I got to the Supervisor of the Accountant department who verified that Kinder care charged me for days that my children have not gone.
So now not even an apology or hey sorry for over charging you and stressing you out. But hey lets go ahead and call you at 8pm and wake the whole house up because you need to tell me your policy. I told them do not call me after 6 pm. Now when I call customer service to speak to someone else besides these people I'm told no you have to talk to them.