Yes James, these rouge garages are still out there that is for sure. Even my favourite, “trusted” garages can let me down and try it on, but fortunately not do what yours did and actually do the job. 3 years ago they did my MOT ( I often used to alternate between my Vx dealer and them). They advised that the brake pipes were severely corroded. I did not believe it, so would not authorise the work.
As soon as possible I got under my car, checked all the pipes, could not see any “severe corrosion” so just cleaned them all up and sprayed them with a protector. Next year went back to Vx for my MOT; full pass and no advisories. Nor has there been since about any pipe corrosion!
So, yes, like with Kwikfittup, there are certainly those trying to create business!
All the best with your claim James. I know you understand the law, but just one point you didn’t cover. Have you served them with a letter of legal intent, with a specified period for a response? In civil law that is a requirement, and in my experience has always brought me the results I demanded before we had to go to court. Last time £950+ back from my Vx dealer for a faulty “out of warranty” a/c compressor.
All the best