Fool me once: shame on you. Fool me twice: shame on me.
First foray to this place: they drained the differential fluid out of my car, thinking it was the oil- and then filled the tank they just drained with oil. Whaaa? Needed a tow to the dealership.
Several years later: a simple two hour replace of an alternator becomes a five hour fiasco. Engine taken apart and lots of head scratching. Sitting here hostage.
Best go to a place with trained professionals.