Had a very odd charge yesterday where the system seems to have misunderstood my tap on the platform validator at Highbury (I had a paper ticket for the GN journey beyond there). Here’s the journey details: (senior railcard is connected to the Oyster card)
22:47 – ???? Camden Town to [No touch-out] £0.00 £17.30
22:47 Touch in, Highbury & Islington £0.00 £17.30
22:29 – ???? Camden Town to [No touch-out] £4.40 £17.30
22:29 Touch in, Camden Town £4.40 £17.30
I touched on at a gate at Camden Town and changed at Euston. I rang the helpline and they’ve refunded me the difference but I use Highbury & Islington a lot and am intrigued as to what I’ve done wrong.