Comcast not installed at my house, was promised it would be

Can someone help me get an update?

I purchased a house 2/14 of this year. The owners said Comcast installed a “box and ran lines” to the house, and was told Comcast would be available before we moved in, or very shortly after. Since my wife works from home, this was important. (We are using a local broadband ISP, but her meetings keep getting dropped the service is so slow…)

It’s been almost 5 months, and I was told the local power company was the issue, but I just got off the phone with them, and they told me they dont have any record of this situation. 

Can someone please help me?