public void DeleteContactNumberOnContactNumberService()
        {
            //arrange
            var mockContactNumberRepository = new Mock<IContactNumberRepository>();
            var mockContactService = new Mock<IContactService>();

            mockContactNumberRepository.Setup(x => x.GetAll()).Returns(_contactNumbers);

            ContactNumberService contactNumberService = new ContactNumberService(mockContactNumberRepository.Object, mockContactService.Object);

            //act
            contactNumberService.Delete(_contactNumber.Id);

            //assert - expected exception
            mockContactNumberRepository.Verify(y => y.Delete(It.IsAny<Guid>()));

            contactNumberService.Dispose();
        }