How do I get my cut line fixed if Comcast Service doesn't show up for appointments

Our Comcast Internet cable was cut last Wednesday September 23rd by a company doing work for DTE in the easement of our property.  We have been trying to get it fixed, we scheduled 3 appointments thus far and no one has shown up to fix this.  We now have an appointment for tomorrow afternoon...8 days and running with no internet.  We require internet for our work and we are losing income.  If Comcast doesn't come for tomorrows appointment, we will need to cancel their service and go to another provider.  We have been given the run around.  Each time we call the service rep says we have an appointment but it doesn't show up on our app or account.  We have a reference number for the appointments that has remained the same for all the no show appointments, so we don't know what good the number does us.  We think perhaps the appointment is not getting received by the servicing crew.  Tomorrow is the 4th appointment we have scheduled.   We need this fixed!