I've been using the service department for several years without a problem.
But my a /c quit working last week so I took it in and left it la s t Tuesday. They kept it a couple of days and I picked it up. No need for a/c then but it was working. Till this Tuesday, so I took it in. They said to leave it and they would get to it asap. Today, Thursday, they still haven't touched it, and I need it for work. No loaner I'm told. So apparently if they don't fix it, instead of being a priority, they just let it sit until they have time. I'm on a "list" for a loaner, so I took my car home with no air still. Being a long time customer or fixing their screwup doesn't matter to them at all.