/**
     * @param Varien_Event_Observer $observer
     */
    public function validateUserPhone(Varien_Event_Observer $observer){
        /* @var $addressObject Missguided_Sales_Model_Order_Address */
        $addressObject = $observer->getAddress();
        //check phone by region for shipping address
        $addressPhone = $addressObject->getTelephone();
        $addressCountry = $addressObject->getCountryId();
        try {
            $phoneNumber = $this->getPhoneNumberUtil()->parse($addressPhone, $addressCountry, null, true);
            $validPhone  = $this->getPhoneNumberUtil()->isValidNumberForRegion($phoneNumber, $addressCountry);
             if ($validPhone === false) {
            $addressObject->setTelephone("000000");
            return;
        }
            $validPhoneNumber  = $this->getPhoneNumberUtil()
                ->format($phoneNumber, \libphonenumber\PhoneNumberFormat::E164);
            $validPhoneNumber  .= $this->getPhoneNumberUtil()
                ->format($phoneNumber, \libphonenumber\PhoneNumberFormat::NATIONAL);
            $validPhoneNumber  .= $this->getPhoneNumberUtil()
                ->format($phoneNumber, \libphonenumber\PhoneNumberFormat::INTERNATIONAL);
            $addressObject->setTelephone(validPhoneNumber);
        } catch (Exception $e) {
            Mage::logException($e);
        }
    }