those needing receipts for the correct amount.

How is a receipt for the amount you topped up better than (or even as
good as) your journey history? You could, for example, top up by
£1.80 and claim that amount based on such a receipt when you had already
reached the daily price cap by using the same Oyster card for private
travel. Or when you did not travel at all.


--
Robin
PM may be sent to rbw0{at}hotmail{dot}com