Sort by filter doesn't work on products and categories

I’m having a hard time making the woocommerce filters work. Please could you see here: http://site.gharfurnish.com/product-category/dining-tables/?orderby=price&layout-in-use=archive-taxonomy-product_cat-16

If I try to sort by price especially, it doesn’t work well.

What I did do was to reorder the products on the page using the Woocommerce customizer plugin.

Do you have any suggestions for me?

I really need these things to work properly.

http://wordpress.org/extend/plugins/woocommerce/