I can't make calls unless I disable my firewall. They don't have a number you can call to troubleshoot problems, you can only chat with an "agent" online. The only thing they can tell me is to disable my firewall. The firewall is there for my protection, so I don't get virus's and other things that can damage my PC. Don't even bother with this company, I'm switching back to Vonage. read full review »