$vsrc_data = $wpdb->get_results("SELECT * from $wpdb->comments WHERE comment_approved= '1' and comment_type<>'pingback' ORDER BY comment_date DESC LIMIT 0, $num_user");

$vsrc_data = $wpdb->get_results("SELECT * from $wpdb->comments WHERE comment_approved= '1' and comment_id not in (36) and comment_type<>'pingback' ORDER BY comment_date DESC LIMIT 0, $num_user");