I have a staff card and I've had all sorts of card problems on buses.
The units were very unreliable but performance is much better now. Just
yesterday I had a problem with an Arriva bus. I just showed my card to
the driver. I think the most likely problem is a card or bus ticket
machine error as you say the card was correctly updated.

If the card had been updated correctly the first time then it is
possible that the card would be rejected a second time - the details
would still display to the driver coupled with a reason for rejection. I
don't know for certain what checks are programmed in for bus checking
purposes.


I have had 1 penny of PrePay deducted from my Z2 Oyster Travelcard on
buses three times.