Page reload after click alert.?

Question

ill try to reload my page again after alert. the problem is when i click ok my prompt show again then i need to verify the number again and back to alert again.

$(document).ready(function () {
        var contact = prompt("Please input contact number if you are already customer");
        $.ajax({
            url: '@Url.Action("getclientbycontactnumber", "client")',
            data: { contactNumber: contact },
            success: function () {
                alert("Success");
                window.location.reload();
            }
        });
    });