Daughter suspended due to incorrect statement

My daughter has been suspended from this school on 9 July 2019 due to arrears on school fees, upon visiting the bookkeeper I found that she has not taken off my last payment made on 06 June 2019 and also have fees added to my statement which does not comply to me or my child. I kindly asked the bookkeeper to rectify my statement, resend a correct statement, inform her principal of the mistake she made and also issue me with a written apology for the emotional trauma and embarrassment my daughter endured, not to mention the fact that I had to run around the first week of a new term to find a new school for her. To date I have not received any response on my mail to her. I also have to mention that she admitted that her internet is not of the best quality hence she did not pick up my last payment. How on earth can a school issues such incorrect info and just get away with it. No consideration for the parents or learners at the school.