Remove unused utility pedestal from my property

I am putting up a new outbuilding and need to have a cylindrical green pedestal removed.  A previous call resulted in a technician coming to verify that no houses in the area use this box...but was not the right person to authorize its removal.  He escalated the request but I have not heard back from xfinity in months.  We are now moving forward with the building process and need to have the box removed.