drop line installation

My wife and i recently moved houses and contacted Xfinity to obtain internet access but were informed we needed to have an underground drop line run to our home as it did not have existing service. We placed the order September 17th and have gotten no true updates on the status of the installation over a month later. An installation date of October 7th came and went with no one showing up to complete the work. We have been without internet this entire time and every time i attempt to call for support (3+ times) i am given the run around with no true resolution or update. I am getting very tired of this process and just want to get the line installed so we can have internet at our home.