public void TestFormatePhoneNumber()
        {
            //Arrange
            string telephone = "+923336323900";
            string dialFrom  = "PK";

            mockPhoneService.Setup(x => x.FormatePhoneNumberForDisplay(telephone, dialFrom)).Returns(new GenericResponse <ValidatePhoneNumberModel>());

            //Act
            PhoneController phoneController = new PhoneController(mockPhoneService.Object);
            var             result          = phoneController.FormatePhoneNumber(telephone, dialFrom);

            //Assert
            mockPhoneService.Verify(x => x.ValidatePhoneNumber(telephone, dialFrom), Times.AtMostOnce);
        }