Xfinity won't bury my cable

Xfinity did a cable drop back in mid-April.  The cable is not laying flat and is stick up in the yard causing a tripping hazard.  I have called Xfinity numerous times to get someone to come out.  Last week the customer service represenative said that I was scheduled to have the cable buried and I took the entire day off work.  No one showed up.  I called in and ultimately I was connected with somone who said Xfinity contracts out the cable burial and I was not scheduled for that day.  I continued to call and I was told on two occassions I would get a call from Xfinity or the third-party that contracts with Xfinity within 24 hours and I never heard back.  I don't know what else to do to get them to bury my cable.