Our service works under a branch of two offices, north and south, contracts state we are reasonably expected to commute between both offices if needed, though certain roles have a "base" office and it isn't expected.
Since I started working there, I was promised the office I'm in would be my base, and I wouldn't be expected to go to the other office as it's not really needed, it's more than an hour out, and I don't drive. There is another person doing the same role as me, and they were told the same.
However, despite that, I had a work colleague I was close friends with, and she had to go to the other office once a week. She drove so it was fine. Then I was asked to go to the other office once a week, as well, along with her as she could take me. This other person doing my role was never asked to go, this responsibility fell on me, and it felt unfair. My colleague who took me to this office then left, and I wasn't expected to go anymore.
I've applied for a new role at work (doing something I have technically been doing for months), and I've been accepted. I prefaced my stance on going to this office, and was promised I wouldn't need to go.
I had a meeting yesterday, and now I am expected to go to this other office once a week to work alongside the specialist in my new role, and gain experience. I'm expected to make my own way there, which is a 90 minute commute, 3 buses each way. I've taken an Uber to this office before and it was £35 each way, which is my only other option. Coming into winter as well, I find this unreasonable. How do I proceed with this, and am I being difficult?