<p>Oh answer to your original q: you should send an email. There should be a written record of the withdrawal. Goes to show how seriously they take this. Let’s say you did it by phone and it gets messed up. They could rescind and you’d have no proof of the withdrawal. This is not a joke! Generally, your GC should also be involved in the process; the ramifications for the HS are severe when this is not done properly.</p>