notice, whereas you are not allowed to give notice at all. there will always be something that you don‘t like. tell them that this is the reason that you are turning the job down.
by this stage, they are desperate and will take anything out of the contract (it‘s good to remember this). they will suggest that you cross it out and send the contract back.
if i were to choose, i would go for the first option. they knew you were doing this all along, and this will end the conversation quicker, which is all you want now. the chances are that the agent will suggest (if you do this), that 