Sale: Calculate the discount yourself!

I love the brand Adidas but have been let down with a response from their online store (co.za) around the prices on their "sale" items. Items in their sale "seem" to have been discounted but not correctly, I came across a running sweatshirt [SUPERNOVA 1/4 ZIP TEE] I was interested in. The normal retail prices was R899 and the sale price was R699 but, the item had been marked down by 46% meaning it should've costed R485.46 and not R699 as displayed a R213.54 difference in pricing. This was just of many instances where I found the sale price to be incorrect. I have contacted them 2 days ago and still waiting for a reply about the issue.