Extremely dissatisfied with customer care.

I went there price on the shelf was 74.99 go to the till and it was 95.99 I took a photo the cashier came to see and pack it in the right place she called her manager who called some supervisor and he came and told me I must learn to read the label and not look at the price but it was indicated with an arrow to the product and they still give me attitude I will never shop there and I have been a loyal customer to them buying my mom's groceries and my own stuff there for years ever since I can remember we have always gone to that spar but never again.