"Arrived and went to reception to give your name and appointment letter?
Claimant does not have problems with memory and communication (mental health)"
Well there goes your chance of working for Jobcentreplus then, as you need to be fully incompetent for that. By their own practice I assume demanding you take your appointment letter with you is a bluff as their normal practice is to say they have lost letters; so only a con artist would remember to actually take theirs along. What is official policy on the state of your mental health if 'forgetting' your letter I would like to know.