I have had this company hang up on me repeatedly and tell me I dialed the wrong 800 number and then be told to call the on e that I just dialed.
The best advice is to NEVER use them as your telephone service. I have ended service and switched to another company but can never get a human to speak to me on the phone and clear up "their" billing errors on my last bill!
It has been and continues to be a very negative experience that I want to end. I will have to file another complaint with my State's Public Utility Commission.
If you have problems I suggest you do the same.