The probably can't mount the dish on the fascia board, even if it had been in the past. They are limited in their choices for proper installation.
Welcome to the community and thank you for posting. I am sorry to hear this happened. When our techs install the equipment, they need to install where there is proper line of sight, to ensure the service will work adequately. I can see in the notes that when the agent you spoke to called the dealer, the dealer stated the roof was the only place he was able to get a proper line of sight. Please let me know if you have further questions or concerns.
It's been a while since we last heard from you, so we will close this thread. If you still have concerns, please start a new thread and include a detailed explanation so we can better assist you.