Do Quotes/Bills need to be itemised ??

Go back to the presenter of the bill and say you are happy to pay whatever but on the proviso you are first given the itemised bill. Basically, a refusal to pay usually stirs the other party into action because they want the money. Hence you get your itemised bill.

I'm in a similar position to the OP. I had a series home improvements to be done, and contacted a local handyman company to carry out the work. They did a decent enough job on the main work, but other parts were really unprofessional, and didn't do what I asked for one of the items. I've given them an opportunity to fix the mistakes, and for the one item they didn't carry out, they are saying a different machine was required and it would cost more. So it begs the question, why didn't they use that particular machine to do what I asked? I would first question the items you're concerned about, and directly ask for a refund or adjustment to the bill. I've asked for a refund, but was told it wasn't company policy to provide refunds under a certain amount. In response, I'm going to let them fix the mistakes, whilst simultaneously building a case for local trading standards against them.