I believe the answer is a given, but there may be a loophole somewhere that I haven't uncovered.
I have been contacted by a business to take over their web design and hosting. Currently they are hosted with Godaddy and it was set up by someone else who charged, and is still charging, a huge amount for providing them with an extremely generic Wordpress site and paying a minimal hosting fee for them.
This person has been unresponsive to them and also to me after taking my first call. Are there any avenues that they, as the obvious business owners, can take to assume ownership of this Godaddy account? The domain name is not a true concern but the email stored on the webmail of that account is highly important.