I have never heard of that, but they haven't screwed me, "yet."
I have been happy with their service even though I have to deal with the idiots driving my car through the autowash before I pick it up after a service.
But there financial guy doesn't like me very much because it cost them triple to repair my car instead of the usual honda or toyota. I have heard him getting upset when I pick the car up, as he approves the repair bill.
I would have thought they would stop reselling Porsche's at Carmax, because they told me they had a previous guy buy a Boxster then the RMS went out and it cost them $10k to replace the engine.
But, I am not dealing with a CA stealership.