On 12 Apr, 12:40, wrote:

I am confused as to why you felt it necessary to have such a
conversation. *You already know how the rules work and that you will
receive the cap. *The cap is applied automatically by the oyster
system and is nothing to do with the ticket office. *Unless you like
going around asking silly questions and then annoying the staff when
they dont know the right answer.

I shall explain.
I had a query when I exited at Wanstead station regarding an incorrect
fare which was deducted from my Oyster card. As a result of this error
a cap was not applied. When I politely asked ticket staff to enlighten
me on this matter and check my oyster usage and give me a print out I
was aggressively challenged wrt z2-6 cap not existing for NRC Holders
and the only cap that could be applied was for z1-6 when travel
reached £4.60. I kindly said that I was not here for an argument and
merely wanted to know why z2-6 cap was not applied, whereupon I was
met with a torrent of fearsome replies stating that z2-6 cap did not
exist. When I said that I had been getting the cap for close to two
years I was told that I should not have been and that I was "lucky"
because there had been a system error. I was then handed the "TFL
Oyster guide to fares" pamphlet by ticket staff ( infront of waiting
customers) to try to find the NRcard discount info. which states that
a z2-6 NRC cap exists. Unfortunately, this info is not printed in the
pamphlet and can only be found online ( which I did explain to ticket
staff). The gloating staff then proceeded to taunt me infront of
customers by saying , "See you can't find it can you, because it
doesn't exist. I've been working in tickets offices for 10 years I
know this and that etc etc etc ..." The whole spectacle was carried
out in public and hence, I did find it quite offensive, belittling and
somewhat humiliating as I'm sure many people would.