public string FormatNumber(string mobileNumber)
{
if (mobileNumber.StartsWith("0"))
{
mobileNumber = mobileNumber.Substring(1, mobileNumber.Length - 1);
mobileNumber = "+44" + mobileNumber;
}
else if (!mobileNumber.StartsWith("+"))
{
mobileNumber = "+" + mobileNumber;
}
return mobileNumber;
}