Too many have gotten “service/emotional support” papers for their pets and abused the system to the point where valid folks are suffering....if it was me, I’d ask them to please call the authorities to help settle the dispute - it is illegal to deny service for someone who requires a guide dog.
It does seem to be an issue: incredible! You never know on FR when you post but 70 replies to this does show it.
The emotional support thing not so much an issue in the UK but as I said the parking badges are abused