Rude store manager

I was at Jwayelani Ennerdale today and was met with the most abrupt and rude store manager I have ever encountered. I was there to purchase milk and the price advertised on display was incorrect according to them however I enquired that while I saw that price I have the right as a customer to be charged that price. He was so rude to me during the conversation I just ended up paying for the milk and leaving the store. As a retired employee of retail I would have never treated a customer in such a manner but would have instead tried to find solution in a rescpectful manner. I am sure to never set foot in that store again and will certainly share my experience with everyone I know.