public function getBillingAddress()
    {
        $address = ($this->Address1) ? $this->Address1 . ",\n" : '';
        $address .= ($this->Address2) ? $this->Address2 . ",\n" : '';
        $address .= ($this->City) ? $this->City . ",\n" : '';
        $address .= ($this->PostCode) ? $this->PostCode . ",\n" : '';
        $address .= ($this->Country) ? $this->Country : '';

        return $address;
    }