Here is solution…please try this stuff……
<?php
/**
* The template for displaying all pages.
*
* This is the template that displays all pages by default.
* Please note that this is the WordPress construct of pages
* and that other 'pages' on your WordPress site will use a
* different template.
*
* @package WordPress
* @subpackage Twenty_Twelve
* @since Twenty Twelve 1.0
*/
get_header(); ?>
<?php
$post = $wp_query->post;
if ( in_category('11') ) {
include(TEMPLATEPATH . '/single_our_services.php');
}
elseif ( in_category('44') ) {
include(TEMPLATEPATH . '/single_rugged_product.php');
}
elseif ( in_category('50') ) {
include(TEMPLATEPATH . '/team_leader.php');
}
elseif ( in_category('50') ) {
include(TEMPLATEPATH . '/saas_maker.php');
}
?>
<?php //get_sidebar(); ?>
<?php get_footer(); ?>