They don't require to roll through at all. They want to roll through because they vacate at the end right next to their gate and they explain their decision with a story about brake temps.
.......which by the looks of things you have accepted and come on here to moan about it. My company has a reporting system which, if I felt something was unacceptable, I would use to clear up issues such as this. Or I'd use my experience of once bitten, twice I take much more positive (AT)
Control.
And it's not about you, the service provider anymore, it is all about the customer, and your superiors that count the pennies will tell you that all day, any day, and sadly you will just have to accept it.