Clicks - keep your prices update please

I love shopping at Clicks I've never had anything bad to say about the products or the customer service but for the love of all that is good please can you make sure the price in the aisle and the price on your system matches. Its so annoying when I get to the pay-point and the item is suddenly more. This has happened to me more that 5 times in the space of a year, which is a lot because i never have this issue at any other store.