6 Weeks and Counting for a simple fibre Installation

I ordered my fibre installation over six weeks ago. Unfortunately, I have no choice in provider. There have been two separate site surveys done and both promised line installation within the following week. It's been four weeks since the last group. The customer service and support numbers can't help me - telling me that I need to speak to the installation department. If I don't get hung up on, I'm transferred to voice mail telling me to leave my details and someone will get back to me, but no one ever does. Sending email requesting assistance is completely ignored.