Exposed Lines delaying project

There are cables running above ground across multiple back and side yards surrounding my property since 7/27. In addition to being a trip/mowing hazard, my fence installation has also been on hold for over a week while we tried to confirm the date Comcast will be back to bury the lines. There is scheduled "routine maintenance" in my area showing up on the app, but we've received no notice of actual excavation or repair timeline. Meanwhile, my fence project including the subsequent grading and landscaping has been on hold for over a week with zero updates from Xfinity. We also lost internet for much of last week and I've spent over 2 hours on calls trying to resolve. 

I'm instructing my fence company to proceed with installation tomorrow at noon unless Comcast confirms timing of work to be done before 5PM CDT today. Prolonging this delay will cause increased cost as weed are starting to grow in the unfinished area, and I need to move this forward.