don’t play fruities much anymore, thank god. Could be numerous reasons behind it being left on best not to jump to conclusions of necessarily anything corrupt or suspicious going on, although does sound a bit off or is it on? lol.
Anyway when I used to play a lot, this has happened to me in the past and in my case the pub didn’t own the machine they but took a payment for having it there so didn’t want to give money to me out of the til until the machine had been checked by the engineer, in case it wasn’t genuine and to prevent fraud and safe guard themselves. It all worked out in the end I just needed to keep gently and polietly keep reminding them persistently. Don’t get me wrong though I have also met some down right awful unscrupulous robbing fucktard landlord/bar staff in my time too, karma usually gets these individuals, i.e. word gets round and people don’t drink there. bye bye business.
hope you get ur money back matey tell us if you do.