Wollies gardens manager

I am very disgusted how i was treated at woolworths gardens I went to purchase comfort fabric softner i grabbed the one that stated 39.99 and proceeded to the till, it rang up at till as 59.99, i then said to cashier that the shelf says 39.99, she called the manager and manager told her to go look, when she came back, she said the barcode was placed in the wrong place, i said to manager ok so where is this ones barcode, she then said she doesn't know, i can take the one i didnt want as thats 39.99, ive never ever come across such a ride manager, i said but its ny fault the barcodes are wrong, if it was pick n pa