Sounds like you are having an absoloute mare buddy. Not the way anyone would like to start the week im sure.

Out of curiosity (as I know nothing about the trucking industry).. would it incur massive costs to tell your drivers that the time slot was 'let's say'an hour earlier than the actual allotment. And then become known as the guys that turn up early rather than just on time or even late. 🤷‍♂️

Hope it gets sorted and the rest of your week goes a bit smoother 👍