Trying to get service to a new construction home

I built a home in semi rural area that has only Comcast as an ISP. I have been trying for months to get service connected to my home. I know service is available in my area because every one of my neighbors uses xfinity but still I have gotten nowhere. Every single time I call the CSR says they have escalated my ticket and that someone will call me within two days. This call never comes. Last time I called I demanded to speak to someone that could actually help me and they said wait for the email/phone call and hung up on me. I started this "process" in March and haven't made a single step forward. What options do I have here? I have no choice but to use this company and this company is refusing to help me. What can I possibly do?