This is quite misleading - it shows the fare from Clapham Junction to
Canary Wharf being £2.20 (£2.30 next year).

Now if I were to use PAYG in January I could assume that's what it
would cost, yet other tables suggest it could be £3.30, which I reckon
is the right price.

Would you have any comeback against them (assuming one had the
patience to tackle the Oyster helpline)?