Bad customer service

Hi, I went to zara cresta and took a blue jacket on the rail , it was the only colour style left, the price was R559 and the others where R759 so I took the R559 and when I get to the till to pay they told me the price is R759 but the price tag says it's R559, , it is not my fault as a customer that the jacket was priced wrong, and I was happy to purchase it at that price , but surely I'm suprised at the way that zara , can loose their loyal customer over a price difference which was done by one of your staff , I'm so so disappointed and do not think I want to be given this treatment by zara , I always refer my friends and family or anyone that ask me where I bought by clothes and will never refer anyone if we are given this attitude.