public without sharing class Five9Query {

    public string cid { get;set; }
    public string phone { get;set; }
    public boolean accAccess { get;set; }
    public boolean access { get;set; }
    public string priority { get;set; }
    public string id { get;set; }
    public string pin { get;set; }
    public string tempCid { get;set; }
    public Integer errorCode { get;set; }
    private string secPin = '11111111';

    public Five9Query() {
        string pin = ApexPages.currentPage().getParameters().get('pin');
        if (pin == secPin){
            system.debug('Pin:  ' + pin);
            string tempCid = ApexPages.currentPage().getParameters().get('cid');
            system.debug('tempCID:  ' +tempCid);
            Integer cidLength = tempCid.length();

            if (cidLength == 10){
                cid = '(' + tempCid.substring(0,3) + ') ' + tempCid.substring(3,6) + '-' + tempCid.substring(6,10);
                system.debug('cid:  ' +cid);
            }
     
            else if (cidLength > 10){
                cid = tempCid;
            }

            List<Contact> conMobile = [SELECT id, MobilePhone, Dealer_Portal_Account_Created__c, Account.PortalLoginCreatedEmailed__c , account.discount_tier__c FROM Contact WHERE MobilePhone = :cid limit 1];
            List<Contact> conPhone = [SELECT id, Phone,Dealer_Portal_Account_Created__c, account.portalLoginCreatedEmailed__c, account.discount_tier__c FROM Contact WHERE Phone = :cid limit 1];
            List<Account> accPhone = [SELECT id, Phone, portalLoginCreatedEmailed__c, discount_tier__c FROM Account WHERE Phone = :cid limit 1];
            List<Account> accFax = [SELECT id, Fax, portalLoginCreatedEmailed__c, discount_tier__c FROM Account WHERE Fax = :cid  limit 1];
            List<Contact> conFax = [SELECT id, Fax,Dealer_Portal_Account_Created__c, account.portalLoginCreatedEmailed__c, account.discount_tier__c FROM Contact WHERE Fax = :cid  limit 1];
            List<Account> accBillingPhone = [SELECT id, Billing_Contact_Phone__c, portalLoginCreatedEmailed__c, discount_tier__c FROM Account WHERE Billing_Contact_Phone__c = :cid limit 1];

            //Checking Contact Mobile Phone
            if (!conMobile.isEmpty()){
                if(conMobile[0].account.portalLoginCreatedEmailed__c == true){
                    errorCode = 0;
                    id = conMobile[0].Id;
                    phone = conMobile[0].MobilePhone;
                    access = conMobile[0].Dealer_Portal_Account_Created__c;
                    priority = conMobile[0].account.discount_tier__c;                  
                }
                else{
                    errorCode = 3;
                    id = conMobile[0].Id;
                    phone = conMobile[0].MobilePhone;
                    access = conMobile[0].account.portalLoginCreatedEmailed__c ;
                    priority = conMobile[0].account.discount_tier__c;
                }
            }

            //Checking Contact Phone
            else if (!conPhone.isEmpty()){
                if(conPhone[0].account.portalLoginCreatedEmailed__c == true){
                    errorCode = 0;
                    id = conPhone[0].Id;
                    phone = conPhone[0].Phone;
                    access = conPhone[0].Dealer_Portal_Account_Created__c;
                    priority = conPhone[0].account.discount_tier__c;                  
                 }
                else{
                    errorCode = 3;
                    id = conPhone[0].Id;
                    phone = conPhone[0].Phone;
                    access = conPhone[0].account.portalLoginCreatedEmailed__c;
                    priority = conPhone[0].account.discount_tier__c;
                }
            }

            //Checking Account Phone
            else if (!accPhone.isEmpty()){
                errorCode = 0;
                id = accPhone[0].Id;
                phone = accPhone[0].Phone;
                access = accPhone[0].portalLoginCreatedEmailed__c;
                priority = accPhone[0].discount_tier__c;                        
            } 

            //Checking Account Billing Phone
            else if (!accBillingPhone.isEmpty()){
                errorCode = 0;
                id = accBillingPhone[0].Id;
                phone = accBillingPhone[0].Billing_Contact_Phone__c;
                access = accBillingPhone[0].portalLoginCreatedEmailed__c;
                priority = accBillingPhone[0].discount_tier__c;                  
            }

            //Checking Account Fax
            else if (!accFax.isEmpty()){  
                errorCode = 0;
                id = accFax[0].Id;
                phone = accFax[0].Fax;
                access = accFax[0].portalLoginCreatedEmailed__c;
                priority = accFax[0].discount_tier__c;           
            }

            //Checking Contact Fax
            else if (!conFax.isEmpty()){
                if(conFax[0].account.portalLoginCreatedEmailed__c == true){
                    errorCode = 0;
                    id = conFax[0].Id;
                    phone = conFax[0].Fax;
                    access = conFax[0].Dealer_Portal_Account_Created__c;
                    priority = conFax[0].account.discount_tier__c;
               
                }
                else{
                    errorCode = 3;
                    id = conFax[0].Id;
                    phone = conFax[0].Fax;
                    access = conFax[0].account.portalLoginCreatedEmailed__c;
                    priority = conFax[0].account.discount_tier__c;
                }           
            }

            else{
             System.debug('No Match');
             errorCode = 1; 
            }
        }
  
        else {
            system.debug('invalid pin');
            errorCode = 2;
        }      
    } 
}

<apex:page Controller="Five9Query" contentType="text/xml" showHeader="false" sidebar="false" cache="false">
<?xml version="1.0" encoding="UTF-8" ?>
<response>
    <id>{!id}</id>
    <access>{!access}</access>
    <priority>{!priority}</priority>
<errorcode>{!errorCode}</errorcode>
</response>
</apex:page>

1.1 verifies creation - done

2.1 verifies creation - done