Creates a new Billbee user account with the data passed

The Email address of the user to create

Set to true, if the user has accepted the Billbee terms & conditions

Specifies an billbee affiliate code to attach to the user

Optionally specify the vat1 (normal) rate of the user

Optionally specify the vat2 (reduced) rate of the user

Optionally specify the default vat mode of the user

Optionally specify the default currency of the user

Optionally specify the default vat index of the user