DeleteSubaccount()
From Rackspace Email & Apps API
This function will delete a sub-account that matches the provided account number. Note that all domains and services on that sub-account must be deleted or this function will return an error.
Parameters
Three strings:
Administrative username, Administrative password, Subaccount number
Return Values
If successful, the return value of the function will be 1.
Consult the Result Code Table for a list of result codes and their meaning.