public string SaveErrorSub(string name, string phone, string email)
    {
        string         ret = "";
        PhoneValidator pv  = new PhoneValidator();

        phone = bll.FormatPhoneNumber(phone);
        if (!pv.PhoneNumbersOk(phone))
        {
            ret = "Please Enter a valid Phone Number";
        }
        else if (!bll.IsValidEmailAddress(email))
        {
            ret = "Please Enter a valid Email Address";
        }
        else if (bll.IsSubEmail(email))
        {
            ret = "Email is already subscribed";
        }
        else if (bll.IsSubPhone(phone))
        {
            ret = "Phone is already subscribed";
        }
        else
        {
            datafile.SaveErrorSub(name, phone, email);
            ret = "Subscriber Saved Successfully";
        }
        return(ret);
    }