Called and they said they would be able to come ou...

Called and they said they would be able to come out Wednesday afternoon. At 8:30 pm they called and said it wouldn't be till after 11pm till they were able to come out. I should have cancelled at that point but had them reschedule for first appointment Friday morning. They show up around 9 and find my system frozen. Come back after noon and charged 90 per pound of freon because the system is low. But to find out why the system is low and correctly diagnose the problem would be an extra $180 for ten minutes worth of looking for the leak. I have never felt more ripped off than after letting these people into my home.