Directv keeps rescheduling my service appointment

My wife scheduled a service appointment to have our dish reinstalled on my roof after recent roof work was done to my house.  She received an email stating it would be for the following day (a thursday).  The next day rolls around and we were suppose to have someone come between 12-4 and nobody shows.  My wife had received an email and a phone call both confirming that date.  We call back and try to figure out what was going on and they tell us our appointment has been rescheduled to the following monday.  No call or anything to update us that it had been changed.  So we put aside directvs incompetence and unwillingness of their customer service to resolve the problem and agree to the following monday....Now monday has come and I have a tech arrive at the house and tells me that the work order is wrong and needs to have it changed.  We made it pretty clear to the customer service representive that our satellite was not currently on our house and need to be reinstalled.  The tech guy talks to someone with directv, they change the work order but he says he still needs for directv to issue it to him before he can be begin.  So he tells me he i just going to go down the street to service another work order while he waits for them to update mine.  Now four hours has passed and he didnt show.  We call directv back and they tell us our appointment is now at the end of the f*&king month.  3 WEEKS with no service.  We try to get a supervisor on the line and they keep telling us there is nothing they can do.  This is beyond frustrating and unless someone sees this message and has any actual attention of addressing my problem I will be ending my service with directv.  This is unacceptable! I have been a loyal customer for nearly 10yrs and this is the what I get from them.  Directv really knows how to treat their customers...GREAT JOB!