Inability to get a connection

What started of so well, installation on time, went down hill after that. I was told it could take up to 72 hours for my connection to happened, I was prepared for that. But I'm still waiting nearly 2 weeks later. They say its working, but the blue light still flashes, there is no connection. I leave messages, emails, talk to people who say they will phone me back, never do! Today I was told to phone them to sort it out, I was on hold for 7 minutes, then someone said she was putting me through to someone else, cut me off. Nobody seems to keep a record of my calls etc, so it's like talking to the company for the first time, every time. It never gets sorted out!