I use Ring Central also, and I have used it for two years, with no problems. I love the flexiblity of the extensions, I need that now my business is growing and sometimes I need help so I will assign an extension to my sub.
Because I am always on the phone researching, and making inquiries, I know about off shore help. To get around that, I will also say to the person on the other end, "Excuse me, but I would prefer to speak to someone in the United States. I maynot understand what you're saying and you maynot understand me, so to avoid any misunderstanding, I would prefer to speak to a rep in the US". It works everytime. I hate drama.