2002 Honda Civic Head Gasket question

I have a 2002 Honda Civic LX with 150,000 miles on it. I noticed in January the heat in the car would only work when I was accelerating. When the car was idling or in stop-and-go traffic it would blast cold air. I took it in to my local Honda dealership and was told it was a problem with the thermostat and a few other things. Seven hundred dollars later, the problem was better, but not eliminated. It got progressively worse, so I brought it in again to the Honda dealership and was told the head gasket was cracked and it would be a $1,650 job. I told him to go ahead and fix it. A week later, my car still wasn't ready. I questioned the service department and was told it was a big job, they installed it wrong the first time, they needed another one, blah, blah blah. Finally, yesterday I was told it was ready to pick up. But when I arrived to pick it up I was told they needed to keep it another day because they noticed an oil leak. I just about blew MY gasket, because it wasn't leaking oil when I brought it in there. The car may have a lot of miles on it, but I have meticulously maintained the car. Now, this is day 10 that my car has been at the Honda service center and there is still no return date in sight -- what is your take on this whole mess?