Unresolved journeys or refunds can be re-credited to your Oystercard instead
of a cheque.

This is not always the case - for refunds organised via helpdesk you have to be
able to specify a station you will pass through in the next 7 days otherwise its cheque
only.

You've got to give them your photocard number so they have a nice mug shot
of you somewhere.

Photocards are no longer required for full rate Oyster Cards. Those customers that
need a photo (student/under16) the Oyster Card has your picture printed on it.