The ability to make calls from anywhere in US, UK or Europe without needing any special equipment is one of our favorite features that has helped us save money by not having to buy expensive mobile devices at all times! We have been using this service since last year but we are still very happy with it because they provide great customer support too!! No issues so far as I know if you need help just ask them via their chat feature available 24/7 which helps me when working remotely sometimes late into night hours.
Call quality could be better especially during busy periods like holidays etc., But overall good experience!! Great call provider who cares about your business needs unlike traditional phone companies where only care how much profit can maximize out customers while ignoring other aspects such as employee satisfaction, cost savings & long term growth plans.