Firstly its not codswallop, contact RPSS and state this on your appeal and it WILL be quashed, secondly if you contact southeastern they will confirm this matter for you, ALL SOUTHEASTERN revenue staff have been informed of this matter and most competent staff are aware.
Please check facts first before ranting. I will even post the email sent from senior management.
I will state again that ALL stations in the same zone as your ticket is ARE valid and will be accepted, if you are issued a PF then this is wrong and you will win the appeal