Trouble loading custom table database data

Trouble loading custom table database data

I have the following table: wp_customercounts with the following fields: customercountid (unique and auto generated), customerid (post_id) and logged_date.
I want to return the number of counts / clicks that are being stored in the database table. At the moment I have the following script. It should load everything when no customer is selected and only load only the details of a selected customer when selected. Here is the code:
/**
 * Load Admin Report
 */

function loadCustomerReport() {

    global $wpdb;

    $customer_id = $_POST['id']; // customer id
    $from_date = $_POST['from']; // from date
    $to_date = $_POST['to']; // to date

    if ($customer_id == 0){
        $sql=" CALL GetCustomerClicks(NULL,'". $from_date ."', '".$to_date."')";
    }else{
        $sql=" CALL GetCustomerClicks('". $customer_id ."','". $from_date ."', '".$to_date."')";
    }

        $posts = $wpdb->get_results($sql);

        echo("<table class='report'>");
        echo("<tr><th>Company</th>");
        echo("<th>Hits</th></tr>");

        foreach ($posts as $post)
        {
            echo("<tr>");
            echo('<td>'.$post->Company.'</td>');
            echo('<td>'.$post->Hits.'</td>');
            echo("</tr>");
        }

        echo("</table>");

        die;

}