When we move houses we ask around, there is usually one that will be recommended, or take our car to one with a minor problem and see how they do and if they do the work properly we go again.
Nobody ever palmed us off with a load of bulls**t. None of the problems with returning my car in a dangerous condition were visible or obvious when the car was collected. A universal joint on the steering column left loose, wheelnuts on a wheel only lightly hand tightened. We realised within 24 hours that there was a problem with the car and took it back and got it fixed properly, but it should never have been left like that in the first place, ditto the lost locking key for the wheel nuts, We realised when we collected the car that they were missing but couldn't stop them loosing the key - again it was fixed but it shouldn't have happened in the first place. Again the same with the overcharging we realised the work hadn't been done very quickly and went back, but it shouldn't never have happened.
We have never had problems like that with our local garage and we have worked on this basis for the last 30+ years. in three different locations.