I reckon they will laugh at you if you ask for your money back.
I doubt they will show you the machine on test mode, why would they? If you are doubtful of their practices, why did you go there and waste £200 in the first place?
Learn a lesson, cut your losses, stop complaining the arcade fleeced you and move on. Even better don't play any machines as there is only ever one winner.
Still pisses you off on every forum, continually asking for things that aren't available.
As I said search and if nothing turns up then take it the game isn't emulated and isn't publically available.
People seem to be told things on one forum and the decide to jump on another forum and ask the same questions.
Some seem incapable of basic learning and understanding at times.....