sorry to hear that, don't give up try again, next time think of questions they will ask use the ones that are posted on here and write your answers down before hand, practice and memorise them.I've got my feedback, basically says I'm not very good and interviews and when under the pressure lost focus and talked bollocks.
It's depressingly accurate I think
I've had chats with drivers from the TOC I currently work at. Safety & traction training is usually a few weeks. Route learning takes months. There is an article about driver training I'll link below which gives a general breakdown of what is involved. Each TOC does it slightly differently of course.