They Won't Let Me On The Bus!!!

Hi, my name is Walker and I'm a 8 month old Golden Retriever in training to be a future service dog. I am going to be working with autistic children when all my training is done. So far, everything has been going good- until I was refused on my trainer's bus. She called the Bus Company to ask for permission for me to be on her bus- and they refused; saying that their policy says no. I am service dog, I will be working and helping a child who may feel alone in the world, I will be going with him everywhere- and I am denied on a School Bus. This would not be a problem if my trainer had access to public buses, but we live out in the country- and she needs to take the school bus to get to school
Please help- people need to become more aware and informed about us Service Dogs. For all you know we could be helping someone you know. Please, let Service Dogs not become an issue, let us become only helpers
Thank you
- Walker