Engine Failure problems of the 2010 Cadillac SRX

Cadillac Srx turbo purchased 7/26/10. November 2010 @ 4000 miles turbo failed to operate and poor acceleration, dealer would have to order recall parts and would let me know when available. Temporary repair to hose made. In March 2011, (@ 6000 miles) attempted to start cold engine and heard noise, and some smoke without moving car. Luckily the car was in my driveway when this "catastrophic engine failure" occurred. Car towed to dealer. Dealer determined that the piston rod was thrown and put a hole in the side of the engine. Car held while dealer investigated cause. Next day advised of cause and told that correction is replacement of the engine. In March, the service dept. Told me they knew nothing about an engine recall only a turbo hose and power steering recall. Dealer has replaced engine and "done all recalls. " I am afraid to pick up the car, and unsure of dealers ethics. I never received any letter of any kind about the safety recalls on my new car. I have never used regular gas in the vehicle.