public function saveCustomer(CustomerDataTransfer $customer)
 {
     $customerdb = $this->customerrepo->findOneBy(array('phone' => $customer->getPhone(), 'lastname' => $customer->getLastname()));
     if ($customerdb === null) {
         $customerdb = new CustomerDB();
         $customerdb->setPhone($customer->getPhone());
         $customerdb->setLastname($customer->getLastname());
         return $customerdb;
     }
     return $customerdb;
 }