100% go to small claims court. They very often side with the little person if it looks remotely like the garage is trying to get away with it. (plus I think we've all been fobbed off by a garage at some point, Judges too. County court Judges are human beings and you dont have to prove 100%. Just on balance of probabilities did missing a service by 100 miles cause those issues (nope)
Send a 7 day LBA then pay £70 or whatever it is nowadays and see them in court.
Send a 7 day LBA then pay £70 or whatever it is nowadays and see them in court.