I wonder how many of those "supporters" would feel the same should something like that happen to them, or would they also come here to rant and blow off the steam of it all.
As it is the OP has decided to leave the repairs in the hands of the facility he trusts and has willfully accepted that he will absorb the costs of repairs on his own. Matter of fact, he mentioned this earlier in this thread and then again later on.
Sometimes peace of mind is the value and when trust is lost then peace of mind must be gained elsewhere, which is what it seems the OP has done. Still does not detract from his feelings and urge to rant. After all, that is the way things go.
Get great service at a shop and you tell a lot of people. Get poor service and you tell the world.