Bank Account Data

using System;
using System.Threading;
using System.Text.RegularExpressions;

class BankAccountData
{
    static void Main()
    {
        string firstName, middleName, lastName;
        decimal balance;
        string bankName;
        string iban;
        string firstNameCC, secondNameCC, thirdNameCC;
        long firstCC, secondCC, thirdCC;

        Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;

        Console.WriteLine("Please enter customer first name");
        firstName = Console.ReadLine();

        Console.WriteLine("Please enter customer middle name");
        middleName = Console.ReadLine();

        Console.WriteLine("Please enter customer last name");
        lastName = Console.ReadLine();

        Console.WriteLine("Enter balance");
        bool checkBalance = decimal.TryParse(Console.ReadLine(), out balance);

        while (checkBalance == false)
        {
            Console.WriteLine("Balance must be a valid number");
            checkBalance = decimal.TryParse(Console.ReadLine(), out balance);
        }
        Console.WriteLine("Enter Bank name");
        bankName = Console.ReadLine();

        Console.WriteLine("Enter IBAN");
        iban = Console.ReadLine();


        Console.WriteLine("Enter first CC number");
        firstNameCC = Console.ReadLine();

        while (!(Regex.IsMatch(firstNameCC, "^[0-9]{16}$")))
        {
            Console.WriteLine("Enter valid CC 16 digit number");
            firstNameCC = Console.ReadLine();
        }

        firstCC = long.Parse(firstNameCC);

        Console.WriteLine("Enter second CC number");
        secondNameCC = Console.ReadLine();

        while (!(Regex.IsMatch(secondNameCC, "^[0-9]{16}$")))
        {
            Console.WriteLine("Enter valid CC 16 digit number");
            secondNameCC = Console.ReadLine();
        }

        secondCC = long.Parse(secondNameCC);

        Console.WriteLine("Enter third CC number");
        thirdNameCC = Console.ReadLine();

        while (!(Regex.IsMatch(thirdNameCC, "^[0-9]{16}$")))
        {
            Console.WriteLine("Enter valid CC 16 digit number");
            thirdNameCC = Console.ReadLine();
        }

        thirdCC = long.Parse(thirdNameCC);



        Console.OutputEncoding = System.Text.Encoding.UTF8;

        Console.Clear();
        Console.WriteLine("\t{0}", bankName);
        Console.WriteLine("Name: {0} {1} {2}" + Environment.NewLine + "IBAN : {3}" +
                           Environment.NewLine + "Balance: {4:#0.00$}" + Environment.NewLine + "First CreditCard №: {5}" +
                           Environment.NewLine + "Second CreditCard №: {6}" + Environment.NewLine + "Third CreditCard №: {7}",
                           firstName, middleName, lastName, iban, balance, firstCC, secondCC, thirdCC);
    }
}