how can I pay for the standby test?

<p>Hi
I took the standby test in Oct. My supervisor did not ask me to fill in any credit card details or anything. In fact, she didn't quite know abt how to do with standby test (Im testing overseas in Australia). So I supposed that I would get a bill or something posted to my address. But I haven't recieved anything so far. Does anyone know how does this standby test work?
Than you very much.</p>