I'm trying to change the layout of category page in Magento through the admin panel. Did all the changes as needed showing below in image:

[custom tab of deafult](https://i.stack.imgur.com/M6imc.png)

In sub-category, I did [Custom Design->Use Parent Category Setting-> yes]

but the problem is changes aren't reflecting in the frontend, no matter whatever the layout is chosen. 
[this is the view of my frontend page](https://i.stack.imgur.com/MKNIX.png)
Added the block in local.xml too.

```
   <?xml version="1.0"?>
<layout version="0.1.0">
<default>
</default>
<catalog_category_default>
  <reference name="root">
    <action method="setTemplate"><template>page/2columns-left.phtml</template></action>
  </reference>
</catalog_category_default>
</layout>

```