You can change your details, like Company Name, preferred payment method, Default Billing Contact, Address, City, State, Zip Code and Phone number as the need arises.
However, because your account is centered around your Email Address and First Name and Last Name, you will need to open a "Billing Inquires" Support Ticket to ask to have those changed.
Keep in mind our Billing Department is available Monday - Friday (closed on Holidays). We will do our best to get to your ticket as quickly as possible to help you with this changes. Here is the direct link to Open Up a Support Ticket