In message , at 19:35:32 on
Tue, 24 Apr 2012, Paul Corfield remarked:
Why do you or Roland consider that there is any need for an apology or
refund?

Because it's now clear that Oyster doesn't charge you the "cheapest
combination of fares for a day's journeys", it charges you the "cheapest
Travelcard that would have covered your day's journeys", which can be
significantly more.
--
Roland Perry