private static string getOwnerPhoneNumber()
{
bool isValidString;
string phoneNumber;
Console.WriteLine("Please Enter Owner's Phone Number: ");
do
{
phoneNumber = Console.ReadLine();
if (Garage.CheckIfLegalPhoneNumber(phoneNumber) == false)
{
Console.WriteLine("You Entered a Non-Digit Character. Please Try Again.");
isValidString = false;
}
else
{
isValidString = true;
}
}while (isValidString == false);
return(phoneNumber);
}
