Disgusting behaviour from the principle

The principal is absolutely rude to parents I went to fetch my daughter today .. Well me and the principle had an altercation last year sometime and ever since all I do is take my kid to creche and fetch her me and the principle never greeted each other ever since .. today she decides to greet me in very rude manner so I ignore her and continue to walk in she then follows me to tell me about my attitude towards her I continue to ignore her while I look for my child since they at the playground .. This women went from 0 to a 100 real quick and told me my child is dismissed as I'm no longer allowed on her premises.. She recked like alcohol as Well and behaved in a very disgusting manner telling her teachers I'm not allowed on the premises and neither is my child where as I've paid .. She treats a lot of parents in a very rude manner .. head office needs to intervene cause that's women's behaviour is getting out of hand