Makro customer care doesn't care

I was overcharged on an item that was advertised as being on special (in February) and when I queried to customer care (via email), I was told it was escalated and I would receive feedback. I also queried twice online through he website and never even got a response. I have followed up via email twice (each a month apart) and received the same generic response of it being escalated (almost word for word the same response from 3 different staff members)