MoveMmy Fibre

Very unhappy, Logged a ticket to move my router to a new adress, Vox send me a quote for the new adress month to month contract and I have accepted it, a couple of days later Im overdue on my account saying there is a cancellation fee that must be payed for the old adress that I did not know about, I said they must then not cancel the old account and they did anyway. So now they want me to pay the cancellation fee