Having to wait 24/38 hours for a statement/invoice

I've been a customer of Chubbs, when I called today to ask them to send me an invoice or statement for December 2015 and for January 2016 Amanda told me I will have to wait 24/38 hours does this even make sense for a customer to be told to wait 24/38 hours for an invoice that has already been generated on their system and I refer to the December 2015. I have asked them to calculate my cancellation fee with them as I've had nothing but problems with them since the word go. Secondly their staff best be thought how to speak to their clients not with an attitude.