I like how easy it was for me as an employee of my organization, using our bill monitor account with them! It's very simple so there are no problems in terms or issues when doing this at work from home too!! There really isn't anything bad about what i have seen yet but if you're looking into getting something similar then maybe try another one out first? If all goes well than they will be great.
We were able track every call we made/received during business hours (8am-5pm) which helped us save money by not having calls over 1 minute long etc..