Yes i had a problem with a car wash as well.
The argument i had is that all car wash software is logic software. Now when this software detects a problem it should shut down immediately. It did not do so in my case and i was stuck in the car wash for 5 mins with the brushes slowly cutting into the paint work.
They tried to use the no spoiler get out but as soon as i mentioned that their software was in breach of HSE legislation they shut up and agreed to repair the car.
Though i am now fighting with them to repair the mess the reapir of mopping th brush marks out has caused. Now my whole car looks like a bag of crap but they have one more chance to remove the mop marks then i want a full respray out of them.
Oh by the way this happened last novemeber so they do drag their heels as usual but hey if i get a free respray out of it then i wont be complaining.